Charity Campaign

using System;

namespace CharityCampaign
{
    class Program
    {
        static void Main(string[] args)
        {
            int days = int.Parse(Console.ReadLine());
            int cookers = int.Parse(Console.ReadLine());
            int cakes = int.Parse(Console.ReadLine());
            int waffle = int.Parse(Console.ReadLine());
            int pancakes = int.Parse(Console.ReadLine());

            double sum = days * (cookers * ((cakes * 45) + (waffle * 5.80) + (pancakes * 3.20)));
            Console.WriteLine(sum - sum / 8);
        }
    }
}