How can I configure the button in this tip calculator tocalculate the total using the entires for the bill and tippercentage? I'm using Visual Studio 2019 Xamarin.Forms

Main.Page.xaml

xmlns:x=\"http://schemas.microsoft.com/winfx/2009/xaml\"
xmlns:d=\"http://xamarin.com/schemas/2014/forms/design\"
xmlns:mc=\"http://schemas.openxmlformats.org/markup-compatibility/2006\"
mc:Ignorable=\"d\"
x:Class=\"Accomplish_2.MainPage\"
BackgroundColor=\"Gray\"
Padding=\"5\">

HorizontalOptions=\"Center\"
VerticalOptions=\"Center\"
FontSize=\"Title\"
FontAttributes=\"Bold\"/>

HeightRequest=\"3\">
  
Keyboard=\"Numeric\"
x:Name=\"billTotal\">
  
Keyboard=\"Numeric\"
x:Name=\"tipPercent\">

Clicked=\"Button_Clicked\">
  

Everything above should be good to go, I just can't figure outhow to get some actual calculations done with the other page of mycode.

Main.Page.xaml.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;

namespace Accomplish_2
{
// Learn more about making custom code visible in the Xamarin.Formspreviewer
// by visiting https://aka.ms/xamarinforms-previewer
[DesignTimeVisible(false)]
public partial class MainPage : ContentPage
{
public MainPage()
{
InitializeComponent();
}

private void Button_Clicked(object sender, EventArgs e)
{
????????_______________________________________________?????????
}
}
}