Сумма чисел

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

namespace Сумма_чисел
{
    class Program
    {
        static void Main(string[] args)
        {
            Random random = new Random();
            int sum = 0;
            int minimumRandomNumber = 0;
            int maximumRandomNumber = 101;
            int maximumNumberForCalculate = random.Next(minimumRandomNumber, maximumRandomNumber);
            int firstDivider = 3;
            int secondDivider = 5;

            for (int i = 0; i < maximumNumberForCalculate; i++)
            {
                if (i % firstDivider == 0 || i % secondDivider == 0)
                {
                    sum += i;
                }
            }

            Console.WriteLine(sum);
        }
    }
}