Fishland

import java.util.Scanner;

public class Fishland {
    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);

        double mackerelPrice= Double.parseDouble(console.nextLine());
        double spratPrice= Double.parseDouble(console.nextLine());
        double kilosBeltedBonito= Double.parseDouble(console.nextLine());
        double kilosScad= Double.parseDouble(console.nextLine());
        double kilosClams= Double.parseDouble(console.nextLine());

        double beltedBonitoPricePerKilo = mackerelPrice + (mackerelPrice * 0.60);
        double scadPricePerKilo = spratPrice + ( spratPrice * 0.80);
        double clamsPricePerKilo = 7.50;

        double georgesBonitos = kilosBeltedBonito * beltedBonitoPricePerKilo;
        double georgesScad = kilosScad * scadPricePerKilo;
        double georgesClams = kilosClams * clamsPricePerKilo;

        double grandTotal = georgesBonitos + georgesClams + georgesScad;

        System.out.printf("%.2f", grandTotal);


    }
}