<Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="auto"></RowDefinition>
            <RowDefinition></RowDefinition>
        </Grid.RowDefinitions>
        <Menu>
            <MenuItem Header="Вид">
                <MenuItem Header="Обычный"></MenuItem>
                <MenuItem Header="Инженерный"></MenuItem>
                <MenuItem Header="Программист"></MenuItem>
                <MenuItem Header="Статистика"></MenuItem>
                <Separator></Separator>
                <MenuItem Header="Журнал"></MenuItem>
                <MenuItem Header="Группировка цифр по разрядам"></MenuItem>
                <Separator></Separator>
                <MenuItem Header="Обычный"></MenuItem>
                <MenuItem Header="Преоразование единиц"></MenuItem>
                <MenuItem Header="Вычисление дат"></MenuItem>
                <MenuItem Header="Листы">
                    <MenuItem Header="Ипотека"></MenuItem>
                    <MenuItem Header="Автолизинг"></MenuItem>
                    <MenuItem Header="Экономия топлива(миль за галлон)"></MenuItem>
                    <MenuItem Header="Экономия топлива(л/100 км)"></MenuItem>
                </MenuItem>
            </MenuItem>
            <MenuItem Header="Правка">
                <MenuItem Header="Копировать"></MenuItem>
                <MenuItem Header="Вставить"></MenuItem>
                <Separator></Separator>
                <MenuItem Header="Журнал">
                    <MenuItem Header="Копировать журнал"></MenuItem>
                    <MenuItem Header="Изменить"></MenuItem>
                    <MenuItem Header="Отменить правку"></MenuItem>
                    <MenuItem Header="Очистить"></MenuItem>
                </MenuItem>
            </MenuItem>
            <MenuItem Header="Справка">
                <MenuItem Header="Просмотреть справку"></MenuItem>
                <Separator></Separator>
                <MenuItem Header="О программе"></MenuItem>
            </MenuItem>
        </Menu>
        <Grid Grid.Row="1" ShowGridLines="False" Background="Bisque">
            <Grid.ColumnDefinitions>
                <ColumnDefinition></ColumnDefinition>
                <ColumnDefinition></ColumnDefinition>
                <ColumnDefinition></ColumnDefinition>
                <ColumnDefinition></ColumnDefinition>
                <ColumnDefinition></ColumnDefinition>
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
                <RowDefinition Height="1.5*"></RowDefinition>
                <RowDefinition></RowDefinition>
                <RowDefinition></RowDefinition>
                <RowDefinition></RowDefinition>
                <RowDefinition></RowDefinition>
                <RowDefinition></RowDefinition>
                <RowDefinition></RowDefinition>
            </Grid.RowDefinitions>
            <TextBox Text="0" x:Name="Tablo"
                 Grid.ColumnSpan="5" Margin="5"
                 TextAlignment="Right" FontSize="20pt"
                 IsReadOnly="True" Cursor="Arrow">
                <TextBox.ToolTip>
                    <ToolTip>
                        Область вывода значений
                    </ToolTip>
                </TextBox.ToolTip>
            </TextBox>
            <Button Content="MC" Focusable="False" Grid.Column="0" Grid.Row="1" Margin="5"/>
            <Button Content="MR" Focusable="False" Grid.Column="1" Grid.Row="1" Margin="5"/>
            <Button Content="MS" Focusable="False" Grid.Column="2" Grid.Row="1" Margin="5"/>
            <Button Content="M+" Focusable="False" Grid.Column="3" Grid.Row="1" Margin="5"/>
            <Button Content="M-" Focusable="False" Grid.Column="4" Grid.Row="1" Margin="5"/>
            <Button Content="BackSp" Focusable="False" Grid.Column="0" Grid.Row="2" Margin="5"/>
            <Button Content="CE" Focusable="False" Grid.Column="1" Grid.Row="2" Margin="5"/>
            <Button Content="C" Focusable="False" Grid.Column="2" Grid.Row="2" Margin="5"/>
            <Button Content="+-" Focusable="False" Grid.Column="3" Grid.Row="2" Margin="5"/>
            <Button Content="Sqrt" Focusable="False" Grid.Column="4" Grid.Row="2" Margin="5"
                ToolTip="Вычисление квадратного корня"/>
            <Button Content="7" Focusable="False" Grid.Column="0" Grid.Row="3" Margin="5"/>
            <Button Content="8" Focusable="False" Grid.Column="1" Grid.Row="3" Margin="5"/>
            <Button Content="9" Focusable="False" Grid.Column="2" Grid.Row="3" Margin="5"/>
            <Button Content="/" Focusable="False" Grid.Column="3" Grid.Row="3" Margin="5"/>
            <Button Content="%" Focusable="False" Grid.Column="4" Grid.Row="3" Margin="5"/>
            <Button Content="4" Focusable="False" Grid.Column="0" Grid.Row="4" Margin="5"/>
            <Button Content="5" Focusable="False" Grid.Column="1" Grid.Row="4" Margin="5"/>
            <Button Content="6" Focusable="False" Grid.Column="2" Grid.Row="4" Margin="5"/>
            <Button Content="*" Focusable="False" Grid.Column="3" Grid.Row="4" Margin="5"/>
            <Button Content="1/x" Focusable="False" Grid.Column="4" Grid.Row="4" Margin="5"/>
            <Button Content="1" Focusable="False" Grid.Column="0" Grid.Row="5" Margin="5" Click="Num1_Click"/>
            <Button Content="2" Focusable="False" Grid.Column="1" Grid.Row="5" Margin="5" Click="Num2_Click"/>
            <Button Content="3" Focusable="False" Grid.Column="2" Grid.Row="5" Margin="5"/>
            <Button Content="-" Focusable="False" Grid.Column="3" Grid.Row="5" Margin="5"/>
            <Button Content="=" Focusable="False" Grid.RowSpan="2" Grid.Column="4" Grid.Row="5" Margin="5"/>
            <Button Content="0" Focusable="False" Grid.ColumnSpan="2" Grid.Row="6" Margin="5" Click="Num0_Click"/>
            <Button Content="," Focusable="False" Grid.Column="2" Grid.Row="6" Margin="5"/>
            <Button Content="+" Focusable="False" Grid.Column="3" Grid.Row="6" Margin="5"/>
        </Grid>
    </Grid>