Money

import java.util.Scanner;

public class Money {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);
        int bitcoin = Integer.parseInt(scan.nextLine());
        double yuans = Double.parseDouble(scan.nextLine());
        double commission = Double.parseDouble(scan.nextLine()) / 100;
        double bitcoinToLeva = bitcoin * 1168;
        double yuansToDollar = yuans * 0.15;
        double dollarToLeva = yuansToDollar * 1.76;
        double leva = bitcoinToLeva + dollarToLeva;
        double euro = leva / 1.95;
        euro -= commission * euro;
        System.out.println(euro);

	}

}