<Grid ShowGridLines="False">
        <Grid.ColumnDefinitions>
            <ColumnDefinition></ColumnDefinition>
            <ColumnDefinition></ColumnDefinition>
            <ColumnDefinition></ColumnDefinition>
            <ColumnDefinition></ColumnDefinition>
            <ColumnDefinition></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="2*"></RowDefinition>
            <RowDefinition></RowDefinition>
            <RowDefinition></RowDefinition>
            <RowDefinition></RowDefinition>
            <RowDefinition></RowDefinition>
            <RowDefinition></RowDefinition>
            <RowDefinition></RowDefinition>
        </Grid.RowDefinitions>
        <TextBox x:Name="Tablo" Grid.ColumnSpan="5" Margin="5 5 5 0"/>
        <Button Content="MC" Margin="5" Focusable="False" Grid.Column="0" Grid.Row="1"/>
        <Button Content="MR" Margin="5" Focusable="False" Grid.Column="1" Grid.Row="1"/>
        <Button Content="MS" Margin="5" Focusable="False" Grid.Column="2" Grid.Row="1"/>
        <Button Content="M+" Margin="5" Focusable="False" Grid.Column="3" Grid.Row="1"/>
        <Button Content="M-" Margin="5" Focusable="False" Grid.Column="4" Grid.Row="1"/>

        <Button Content="BackSp" Margin="5" Focusable="False" Grid.Column="0" Grid.Row="2"/>
        <Button Content="CE" Margin="5" Focusable="False" Grid.Column="1" Grid.Row="2"/>
        <Button Content="C" Margin="5" Focusable="False" Grid.Column="2" Grid.Row="2"/>
        <Button Content="+-" Margin="5" Focusable="False" Grid.Column="3" Grid.Row="2"/>
        <Button Content="Sqrt" Margin="5" Focusable="False" Grid.Column="4" Grid.Row="2"/>

        <Button Content="7" Margin="5" Focusable="False" Grid.Column="0" Grid.Row="3"/>
        <Button Content="8" Margin="5" Focusable="False" Grid.Column="1" Grid.Row="3"/>
        <Button Content="9" Margin="5" Focusable="False" Grid.Column="2" Grid.Row="3"/>
        <Button Content="/" Margin="5" Focusable="False" Grid.Column="3" Grid.Row="3"/>
        <Button Content="%" Margin="5" Focusable="False" Grid.Column="4" Grid.Row="3"/>

        <Button Content="4" Margin="5" Focusable="False" Grid.Column="0" Grid.Row="4"/>
        <Button Content="5" Margin="5" Focusable="False" Grid.Column="1" Grid.Row="4"/>
        <Button Content="6" Margin="5" Focusable="False" Grid.Column="2" Grid.Row="4"/>
        <Button Content="*" Margin="5" Focusable="False" Grid.Column="3" Grid.Row="4"/>
        <Button Content="1/x" Margin="5" Focusable="False" Grid.Column="4" Grid.Row="4"/>

        <Button Content="1" Margin="5" Focusable="False" Grid.Column="0" Grid.Row="5"/>
        <Button Content="2" Margin="5" Focusable="False" Grid.Column="1" Grid.Row="5"/>
        <Button Content="3" Margin="5" Focusable="False" Grid.Column="2" Grid.Row="5"/>
        <Button Content="-" Margin="5" Focusable="False" Grid.Column="3" Grid.Row="5"/>
        <Button Content="=" Margin="5" Focusable="False" Grid.Column="4" Grid.Row="5"
                Grid.RowSpan="2"/>

        <Button Content="0" Margin="5" Focusable="False" Grid.Column="0" Grid.Row="6"
                Grid.ColumnSpan="2"/>
        <Button Content="," Margin="5" Focusable="False" Grid.Column="2" Grid.Row="6"/>
        <Button Content="+" Margin="5" Focusable="False" Grid.Column="3" Grid.Row="6"/>

    </Grid>