Code

using System;
namespace SecondConvertor
{
     internal class Program
    {
        static void Main(string[] args)
        {
            var year = 31104000; var month = 2592000;var day = 86400;var hour = 3600;var minute = 60;
            Console.Write("Enter Seconds : ");
            int second = int.Parse(Console.ReadLine());
            
            var iyear = second/year;
            var RemainSec = second % year;

            var imonth = RemainSec / month;
            RemainSec = RemainSec % month;

            var iday = RemainSec / day;
            RemainSec = RemainSec % day;

            var ihour = RemainSec / hour;
            RemainSec = RemainSec % hour;

            var iminute = RemainSec / minute;
            RemainSec = RemainSec % minute;

            Console.WriteLine($"{iyear} Years , {imonth} Months , {iday} Days , {ihour} Hours , {iminute} Minutes , {RemainSec} Seconds");
        }
    }
}