using System;

namespace _04._Vacation_books_list
{
    class Program
    {
        static void Main(string[] args)
        {
            int sheets = int.Parse(Console.ReadLine());

                double read = double.Parse(Console.ReadLine());

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

                        double bookreadingtime = sheets / read;
                        double hoursperday = bookreadingtime / days;
                        Console.WriteLine(hoursperday);






        }
    }
}