import java.util.Scanner;

public class WorkCompletion {

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

        double totalWork = sc.nextDouble();
        double individualWorkRate = sc.nextDouble();
        int numberOfWorkers = sc.nextInt();
        double workRatePerWorker = sc.nextDouble();

        if (totalWork <= 0) {
            System.out.println("Invalid input");
            return;
        }
        if (individualWorkRate <= 0 || numberOfWorkers <= 0 || workRatePerWorker <= 0) {
            System.out.println("-1");
            return;
        }

        double individualWorkerDays = totalWork / individualWorkRate;
        double groupWorkerDays = totalWork / (numberOfWorkers * workRatePerWorker);

        System.out.println(individualWorkerDays);
        System.out.println(GroupWorkerDays);
    }
}