Console Input/Output - Task 11

using System;
namespace ConsoleInputOutput
{
    public static class Intervals
    {
        public static void Main()
        {
            long start = long.Parse(Console.ReadLine());
            long end = long.Parse(Console.ReadLine());
            int count = 0;
            for (long i = start; i <= end; i++)
            {
                if (i%5==0)
                {
                    count++;
                }
            }
            Console.WriteLine(count);
        }
    }
}