Сумма чисел

using System;

namespace CSLight
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int largerNumber = 101;
            int smallerNumber = 0;
            Random random = new Random();
            int number = random.Next(smallerNumber, largerNumber);
            int divisibleFirstNumber = 3;
            int divisibleSecondNumber = 5;
            int amount = 0;

            Console.WriteLine(number);

            for (int i = number; i > smallerNumber; i--)
            {
                if ((i % divisibleFirstNumber == 0) || ((i % divisibleSecondNumber) == 0))
                {
                    amount++;
                }
            }
            Console.WriteLine(amount);
            Console.ReadKey();
        }
    }
}