using System;

public class Program

{

    public static void Main()

    {

        int a=2;

        int b=3;

        var calc = new Calc();

        Console.WriteLine("The answers are:");

        Console.WriteLine(calc.DoSum(a,b).ToString());

        Console.WriteLine(calc.DoMultiply(a,b).ToString());

        Console.WriteLine(calc.DoDivide(a,b).ToString());

    }

}

public class Calc

    {

        public int Firstnumber { get; set;}

        public int Secondnumber { get; set;}

        internal int DoSum(int a, int b)

        {

            return a + b;

​

        }

        internal int DoMultiply(int a, int b)

        {

            return a * b;

​

        }

        internal int DoDivide(int a, int b)

        {

            return a / b;

​

        }

​

    }