Project Euler problem #5 solution.

using System;

public class Problem
{
    static void Main()
    {
        int a = 20;
        int b = 0;

        while (b <= 0)
        {
            for (int i = 11; i <= 20; i++)
            {
                if (a % i != 0)
                {
                    a += 20;
                    break;
                }
                else if (i == 20)
                {
                    b = a;
                    break;
                }
            }
        }

        Console.WriteLine("\n{0}\n", b);
    }
}