public static void Main()
int num1 = int.Parse(Console.ReadLine());
int num2 = int.Parse(Console.ReadLine());
Console.WriteLine("Number 1={0}", num1);
Console.WriteLine("Number 2={0}", num2);
Console.WriteLine("Sum = {0}\nSub = {1}\nMultiple={2}\nDivide={3:F}", num1 + num2, num1 - num2, num1 * num2, num1 / num2);