using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        double x = 4;

        double y = 8;

        double w = 12;

        double t = 3;

​

         double z=x/y;

        Console.WriteLine(z);

        string a, b, c, d, e;

            Console.WriteLine("Number 1");

        a = Console.ReadLine();

        x = (Convert.ToInt32(a));

        Console.WriteLine("Number 2");

        b = Console.ReadLine();

        y = Convert.ToInt32(b);

        //Console.WriteLine(x+y);

        z = x + y;

        w = x - y;

        t = x*y;

        c = z.ToString();

        d = w.ToString();

        e = t.ToString();

    Console.WriteLine(a + " + " + b + " = " + c);

        Console.WriteLine(a + " - " + b + " = " + d);

        Console.WriteLine(a + " * " + b + " = " + e);

}

}