using System;

class Multiplication

{  public int multiply(int a, int b)

   { return a * b ; }

 public string multiply (string a, int b)

 {   string result = "";

  for (int i = 0; i < b; i++)

  { result += a; }

  return result;

  }

}

​

public class Program

{

    public static void Main(string[] args)

    {

        Multiplication m = new Multiplication ();

        Console.WriteLine(m.multiply(3, 5));

        Console.WriteLine(m.multiply("=", 5));

    }

}