using System; using System.Globalization;

namespace ConsoleSite { class Program { static void Main(string[] args) { int x; double y, consumo;

        x = int.Parse(Console.ReadLine());
        y = double.Parse(Console.ReadLine(), CultureInfo.InvariantCulture);

        consumo = x / y;

        Console.WriteLine(consumo.ToString("F3", CultureInfo.InvariantCulture) + " Km / l  ");

    }

}

}