import java.util.Scanner;
public class Main {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        double n = Double.parseDouble(scanner.nextLine());
        double minSum = 0;
        double discount = 0;
        for (int i = 1; i <= n; i++) {
            double current = Double.parseDouble(scanner.nextLine());
            minSum = current * 0.65;
            discount = current - minSum;
            System.out.printf("%.2f%n", discount);
        }
        }
    }