using System;

public class Program

{

    public static void Main()

    {

        int num, sum, num1;

        Console.WriteLine("enter two numbers");

        num = int.Parse(Console.ReadLine());

        num1 = int.Parse(Console.ReadLine());

        sum = 0;

        while (sum < num * num1)

        {

            sum = sum + num;

            Console.WriteLine(sum);

        }

    }

}

​