using System;

namespace CharityMarathon
{
    public class CharityMarathon
    {
        public static void Main()
        {
            int marathonLength = int.Parse(Console.ReadLine());
            int numOfRunners = int.Parse(Console.ReadLine());
            int numLapsperRunner = int.Parse(Console.ReadLine());
            int trackLength = int.Parse(Console.ReadLine());
            int trackCapacity = int.Parse(Console.ReadLine());
            decimal moneyPerKm = decimal.Parse(Console.ReadLine());

            int capacityTotal = trackCapacity * marathonLength;

            if (capacityTotal <= numOfRunners)
            {
                numOfRunners = capacityTotal;
            }

            ulong metersTotal = (ulong)numOfRunners * (ulong)numLapsperRunner * (ulong)trackLength;
            ulong totalKm = metersTotal / 1000;

            decimal moneyTotal = totalKm * moneyPerKm;

            Console.WriteLine("Money raised: {0:f2}", moneyTotal);

        }
    }
}