using System;

public class Program

{

    public static void Main()

    {

        double fuelfor100km = double.Parse(Console.ReadLine());

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

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

            double totalfuel = fuelfor100km * priceperliter;

            double totalprice = totalfuel * priceperliter;

            Console.WriteLine($"Разходът ви за гориво е {totalprice} лв.");

    }

}