import java.util.Scanner;

public class ChangeBureau {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int bitcoin = Integer.parseInt(scanner.nextLine());
        double chineseYuan = Double.parseDouble(scanner.nextLine());
        double commisionPercent = Double.parseDouble(scanner.nextLine());

       double bitcoinPriceLeva = 1168;
       double yuanPriceDollar = 0.15; // dollar
       double dollar = 1.76; // leva
       double euro = 1.95;

       double yuanPriceToLev =  (chineseYuan * yuanPriceDollar) * 1.76;

       double finalPriceLev = (bitcoinPriceLeva * bitcoin) + yuanPriceToLev;
       double finalPriceEuro = (bitcoinPriceLeva +  yuanPriceToLev) / 1.95;
       double comissionValue = commisionPercent / 100;
       double finalAnswer = finalPriceEuro - (finalPriceEuro * comissionValue);


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