using System;

public class Program

{

    public static void Main()

    {

            int pagesBook = int.Parse(Console.ReadLine());

            int pagesReadForHour = int.Parse(Console.ReadLine());

            int daysForReading = int.Parse(Console.ReadLine());

​

            int timeForReading = pagesBook / pagesReadForHour;

            int neededHours = timeForReading / daysForReading;

​

            Console.WriteLine(neededHours);

    }

}