using System;

public class Program

{

    public static void Main()

    {

        Int32 intervalSecond = 192400; 

        DetermineIntervalSeconds(intervalSecond); // should return */26 */5 */2 * *

        Int32 interval2Days = 172800;

        DetermineIntervalSeconds(interval2Days); // should return * * */2 * *

​

        Int32 interval1Day = 86400;

        DetermineIntervalSeconds(interval1Day); // should return * * */1 * *

        Int32 interval2Hours = 7200; 

        DetermineIntervalSeconds(interval2Hours); // should return * */2 * * *

        Int32 interval1Hour = 3600;

        DetermineIntervalSeconds(interval1Hour); // should return * */1 * * *

        Int32 interval2Minutes = 120; 

        DetermineIntervalSeconds(interval2Minutes); // should return */2 * * * *

        Int32 interval1Minute = 60;

        DetermineIntervalSeconds(interval1Minute); // should return */1 * * * *

        Int32 intervalMinute = 192400 / 60;

        DetermineIntervalMinutes(intervalMinute); // should return */26 */5 */2 * *

    }

    public static void DetermineIntervalSeconds(int intervalInSeconds)

    {

        var interval = intervalInSeconds;

        var days = Math.Floor((decimal) (interval / 86400));

        var dayRemainder = interval % 86400;

        var hours = Math.Floor((decimal) (dayRemainder >= 3600 ? dayRemainder / 3600 : 0));

        var hourRemainder = dayRemainder % 3600;

        var minutes = Math.Floor((decimal) (hourRemainder >= 60 ? hourRemainder / 60 : hourRemainder));

        Console.WriteLine("-----------------------------");

        Console.WriteLine("Interval: " + interval);

        Console.WriteLine("Days: " + days);

        Console.WriteLine("Remainder after days: " + dayRemainder);

        Console.WriteLine("Hours: " + hours);

        Console.WriteLine("Remainder after hours: " + hourRemainder);

        Console.WriteLine("Minutes: " + minutes);

        Console.WriteLine("Cron: " + (minutes > 0 ? "*/" + minutes : "*") + " " + (hours > 0 ? "*/" + hours : "*") + " " + (days > 0 ? "*/" + days : "*") + " " + "*" + " " + "*");

        Console.WriteLine("-----------------------------");

    }   

    public static void DetermineIntervalMinutes(int intervalInMinutes)

    {

        var interval = intervalInMinutes;

        var days = Math.Floor((decimal) (interval / (86400 / 60)));

        var dayRemainder = interval % (86400 / 60);

        var hours = Math.Floor((decimal) (dayRemainder >= (3600 / 60) ? dayRemainder / (3600 / 60) : 0));

        var hourRemainder = dayRemainder % (3600 / 60);

        var minutes = Math.Floor((decimal) (hourRemainder >= (60 / 60) ? hourRemainder / (60 / 60) : hourRemainder));

        Console.WriteLine("-----------------------------");

        Console.WriteLine("Interval: " + interval);

        Console.WriteLine("Days: " + days);

        Console.WriteLine("Remainder after days: " + dayRemainder);

        Console.WriteLine("Hours: " + hours);

        Console.WriteLine("Remainder after hours: " + hourRemainder);

        Console.WriteLine("Minutes: " + minutes);

        Console.WriteLine("Cron: " + (minutes > 0 ? "*/" + minutes : "*") + " " + (hours > 0 ? "*/" + hours : "*") + " " + (days > 0 ? "*/" + days : "*") + " " + "*" + " " + "*");

        Console.WriteLine("-----------------------------");

    }

}