using System;

public class Program

{

    public static void Main()

    {

        while(true){

            Console.WriteLine("Enter a number");

            Int64 a = Convert.ToInt64(Console.ReadLine());

            Console.WriteLine("Enter an operator");

            string c = Convert.ToString(Console.ReadLine());

            Console.WriteLine("Enter a number");

            Int64 b = Convert.ToInt64(Console.ReadLine());

​

            if (c == "/"){

                Int64 Answer  = a/b;

                Console.WriteLine(Answer);

            }

​

            else if (c == "*"){

                Int64 Answer  = a*b;

                Console.WriteLine(Answer);

            }

​

            else if (c == "-"){

                Int64 Answer  = a-b;

                Console.WriteLine(Answer);

            }

​

            else if (c == "+"){

                Int64 Answer  = a+b;

                Console.WriteLine(Answer);

            }

            Console.WriteLine("==============\n==============\n==============\n==============\n");

        }

    }

}