import java.util.Scanner;

public class ChangeBureau_01 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int bitcoin = Integer.parseInt(scanner.nextLine());
        double uana = Double.parseDouble(scanner.nextLine());
        double comission = Double.parseDouble(scanner.nextLine());

        double dolars = 1.76;
        double euro = 1.95;
        double bitcointToLeva = bitcoin*1168.0;
        double uanaToLeva = uana*(0.15*dolars);
        double comisionprocentige = comission*0.01;

        double ggg = bitcointToLeva+uanaToLeva;

        double fff = ggg/euro;

        double total = fff-fff*comisionprocentige;

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