diff --git a/DBClasses.cs b/DBClasses.cs
index 6d939a1..b51873e 100644
--- a/DBClasses.cs
+++ b/DBClasses.cs
@@ -1,9 +1,19 @@
 using System;
+using System.Globalization;
 using System.Text.RegularExpressions;
 
 namespace CryptoCalc
 {
 
+    public enum TransactionTypes
+    {
+        Buy,
+        Sell,
+        Transfer,
+        Mining
+    }
+
+
     public interface IDBClasses
     {
         static string DBName { get; }
@@ -21,8 +31,8 @@ namespace CryptoCalc
         public virtual string DBVariables { get; set; }
         public string DBSaveDataString => $"({Regex.Replace(DBVariables, "@", "")}) values ({DBVariables})";
 
-        public int Index { get; set; }
-        public long UnixTime { get; set; }
+        public long Index { get; set; }
+        public ulong UnixTime { get; set; }
 
 
         #endregion
@@ -31,20 +41,20 @@ namespace CryptoCalc
 
         public void SaveUnixTimeNow()
         {
-            UnixTime = (long)DateTime.UtcNow.Subtract(DateTime.UnixEpoch).TotalSeconds;
+            UnixTime = (ulong)DateTime.UtcNow.Subtract(DateTime.UnixEpoch).TotalSeconds;
         }
 
-        public static long GetUnixTime(DateTime dateTime)
+        public static ulong GetUnixTime(DateTime dateTime)
         {
-            return (long)dateTime.Subtract(DateTime.UnixEpoch).TotalSeconds;
+            return (ulong)dateTime.Subtract(DateTime.UnixEpoch).TotalSeconds;
         }
 
-        public static DateTime GetUTCTimeFromUnixTime(long unix)
+        public static DateTime GetUTCTimeFromUnixTime(ulong unix)
         {
             return DateTime.UnixEpoch.AddSeconds(unix).ToUniversalTime();
         }
 
-        public static DateTime GetLocalTimeFromUnixTime(long unix)
+        public static DateTime GetLocalTimeFromUnixTime(ulong unix)
         {
             return DateTime.UnixEpoch.AddSeconds(unix).ToLocalTime();
         }
@@ -60,12 +70,14 @@ namespace CryptoCalc
         public override string DBVariables { get => base.DBVariables; set => base.DBVariables = value; }
         public override string DBTableName => "Transactions";
 
-        public int WalletID { get; set; }
+        public long WalletID { get; set; }
         public string Currency { get; set; }
-        public decimal Amount { get; set; }
+        public long Amount { get; set; }
+        public ulong AmountDecimal { get; set; }
         public string TransactionType { get; set; }
         public string FeeCurrency { get; set; }
-        public decimal FeeAmount { get; set; }
+        public long FeeAmount { get; set; }
+        public ulong FeeAmountDecimal { get; set; }
         public string Platform { get; set; }
         public string Note { get; set; }
 
@@ -75,12 +87,12 @@ namespace CryptoCalc
 
         public Transaction() { SetDBStrings(); }
 
-        public Transaction(int walletID, string currency, decimal amount, string type)
+        public Transaction(long walletID, string currency, decimal amount, string type)
         {
             SaveUnixTimeNow();
             WalletID = walletID;
             Currency = currency;
-            Amount = amount;
+            (Amount, AmountDecimal) = Util.SplitDecimal(amount);
             TransactionType = type;
 
             Platform = "";
@@ -93,10 +105,10 @@ namespace CryptoCalc
         {
             SaveUnixTimeNow();
             Currency = currency;
-            Amount = amount;
+            (Amount, AmountDecimal) = Util.SplitDecimal(amount);
             TransactionType = type;
             FeeCurrency = feeCurrency;
-            FeeAmount = feeAmount;
+            (FeeAmount, FeeAmountDecimal) = Util.SplitDecimal(feeAmount);
             Platform = "";
             Note = "";
 
@@ -114,14 +126,16 @@ namespace CryptoCalc
                     + $"@{nameof(UnixTime)},"
                     + $"@{nameof(Currency)},"
                     + $"@{nameof(Amount)},"
+                    + $"@{nameof(AmountDecimal)},"
                     + $"@{nameof(TransactionType)},"
                     + $"@{nameof(FeeCurrency)},"
                     + $"@{nameof(FeeAmount)},"
+                    + $"@{nameof(FeeAmountDecimal)},"
                     + $"@{nameof(Platform)},"
                     + $"@{nameof(Note)}";
         }
 
-        public string FullInfo => $"{ Index } {WalletID} { GetLocalTimeFromUnixTime(UnixTime) } { Currency } { Amount } { TransactionType }";
+        public string FullInfo => $"{ Index } {WalletID} { GetLocalTimeFromUnixTime(UnixTime) } { Currency } { Util.CombineDecimal(Amount, AmountDecimal) } { TransactionType }";
 
         public string CreateTable(string walletTableName)
         {
@@ -131,10 +145,12 @@ namespace CryptoCalc
             + $"\"{nameof(WalletID)}\"              INTEGER NOT NULL,"
             + $"\"{nameof(UnixTime)}\"              INTEGER NOT NULL,"
             + $"\"{nameof(Currency)}\"              TEXT NOT NULL,"
-            + $"\"{nameof(Amount)}\"                REAL NOT NULL,"
+            + $"\"{nameof(Amount)}\"                INTEGER NOT NULL,"
+            + $"\"{nameof(AmountDecimal)}\"         INTEGER NOT NULL,"
             + $"\"{nameof(TransactionType)}\"       TEXT NOT NULL,"
             + $"\"{nameof(FeeCurrency)}\"           TEXT,"
-            + $"\"{nameof(FeeAmount)}\"             REAL,"
+            + $"\"{nameof(FeeAmount)}\"             INTEGER,"
+            + $"\"{nameof(FeeAmountDecimal)}\"      INTEGER,"
             + $"\"{nameof(Platform)}\"              TEXT,"
             + $"\"{nameof(Note)}\"                  TEXT,"
             + $"PRIMARY KEY(\"{nameof(Index)}\"     AUTOINCREMENT),"
@@ -152,11 +168,12 @@ namespace CryptoCalc
         public override string DBVariables { get => base.DBVariables; set => base.DBVariables = value; }
         public override string DBTableName => "Wallets";
 
-        public long UnixTimeCreated { get; set; }
+        public ulong UnixTimeCreated { get; set; }
         public string Platform { get; set; }
         public string Name { get; set; }
         public string Currency { get; set; }
-        public decimal Balance { get; set; }
+        public long Balance { get; set; }
+        public ulong BalanceDecimal { get; set; }
         public int DefaultWallet { get; set; }
         public string Note { get; set; }
 
@@ -173,7 +190,7 @@ namespace CryptoCalc
             Platform = platform;
             Name = name;
             Currency = currency;
-            Balance = 0M;
+            (Balance, BalanceDecimal) = Util.SplitDecimal(0);
             DefaultWallet = 0;
             Note = note;
 
@@ -193,6 +210,7 @@ namespace CryptoCalc
                 + $"@{nameof(Name)},"
                 + $"@{nameof(Currency)},"
                 + $"@{nameof(Balance)},"
+                + $"@{nameof(BalanceDecimal)},"
                 + $"@{nameof(DefaultWallet)},"
                 + $"@{nameof(Note)}";
         }
@@ -209,7 +227,8 @@ namespace CryptoCalc
             + $"\"{nameof(Platform)}\"          TEXT,"
             + $"\"{nameof(Name)}\"              TEXT,"
             + $"\"{nameof(Currency)}\"          TEXT NOT NULL,"
-            + $"\"{nameof(Balance)}\"           REAL NOT NULL,"
+            + $"\"{nameof(Balance)}\"           INTEGER NOT NULL,"
+            + $"\"{nameof(BalanceDecimal)}\"    INTEGER NOT NULL,"
             + $"\"{nameof(DefaultWallet)}\"     INTEGER,"
             + $"\"{nameof(Note)}\"              TEXT,"
             + $"PRIMARY KEY(\"{nameof(Index)}\" AUTOINCREMENT)"
diff --git a/MainWindow.xaml b/MainWindow.xaml
index 29fd908..c1a817d 100644
--- a/MainWindow.xaml
+++ b/MainWindow.xaml
@@ -23,6 +23,7 @@
                     <ListBox x:Name="transactionsFoundListBox" Margin="27,66,331,10"/>
                     <TextBox x:Name="currencyText" HorizontalAlignment="Left" Margin="89,21,0,0" Text="SOL" TextWrapping="Wrap" VerticalAlignment="Top" Width="75" Height="22" LostFocus="currencyText_LostFocus"/>
                     <Button x:Name="searchButton" Content="Search" HorizontalAlignment="Left" Margin="169,20,0,0" VerticalAlignment="Top" Click="searchButton_Click" Height="25" Width="55"/>
+                    <DatePicker x:Name="insertTransactionDatePicker" HorizontalAlignment="Right" Margin="0,0,60,157" VerticalAlignment="Bottom" Width="120" FirstDayOfWeek="Monday" SelectedDateFormat="Short"/>
                 </Grid>
             </TabItem>
             <TabItem Header="Overview">
diff --git a/MainWindow.xaml.cs b/MainWindow.xaml.cs
index f54df46..31c5891 100644
--- a/MainWindow.xaml.cs
+++ b/MainWindow.xaml.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Globalization;
 using System.Windows;
 using System.Windows.Controls;
 
@@ -49,7 +50,7 @@ namespace CryptoCalc
                 new Transaction(
                     selectedWallet.Index,
                     inputCurrency.Text,
-                    Convert.ToDecimal(inputAmount.Text),
+                    Convert.ToDecimal(inputAmount.Text, CultureInfo.InvariantCulture),
                     inputType.Text
                     )
                 );
@@ -110,7 +111,7 @@ namespace CryptoCalc
             t.WalletID = selectedWallet.Index;
             t.SaveUnixTimeNow();
             t.Currency = "SOL";
-            t.Amount = Convert.ToDecimal(30 * rand.NextDouble());
+            (t.Amount, t.AmountDecimal) = Util.SplitDecimal(Convert.ToDecimal(30m * (decimal)rand.NextDouble()));
             t.TransactionType = "BUY";
             t.Platform = "Firi";
             t.Note = "Test";
@@ -134,7 +135,8 @@ namespace CryptoCalc
 
         private void inputAmount_LostFocus(object sender, RoutedEventArgs e)
         {
-            inputAmount.Text = inputAmount.Text.Replace(".", ",");
+            //inputAmount.Text = inputAmount.Text.Replace(".", ",");
+            inputAmount.Text = inputAmount.Text.Replace(",", ".");
         }
 
         private void currencyText_LostFocus(object sender, RoutedEventArgs e)
diff --git a/Util.cs b/Util.cs
index ddf0b1a..049c5b5 100644
--- a/Util.cs
+++ b/Util.cs
@@ -4,9 +4,33 @@ namespace CryptoCalc
 {
     public class Util
     {
+        private static readonly decimal lowestUnit = 1e18m;
+
         public static string GetConnectionString(string name = "Default")
         {
             return ConfigurationManager.ConnectionStrings[name].ConnectionString;
         }
+
+        public static ulong ConvToULong(decimal value)
+        {
+            return decimal.ToUInt64(value * lowestUnit);
+        }
+
+        public static decimal ConvToDecimal(ulong value)
+        {
+            return value / lowestUnit;
+        }
+
+        public static (long wholeNumber, ulong fractionNumber) SplitDecimal(decimal value)
+        {
+            long w = (long)value;
+            ulong f = ConvToULong((value % 1));
+            return (w, f);
+        }
+
+        public static decimal CombineDecimal(long amount, ulong amountDecimal)
+        {
+            return amount + ConvToDecimal(amountDecimal);
+        }
     }
 }