Multiply two number without using multiplication operator(*)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication26
{
class Program
{
static void Main(string[] args)
{
int tot = 0;
int nNum1 = Convert.ToInt32(Console.ReadLine());
int nNum2 = Convert.ToInt32(Console.ReadLine());
for (int i = 0; i <nNum2; i++)
{
tot += nNum1;

}
Console.WriteLine("Result is ==>"+tot);

Console.ReadLine();
}
}
}
crazy code.......