import java.util.Scanner;
public class Solution
{
    public static void main(String[] args)
    {
        Scanner sc=new Scanner(System.in);
        
        double totalWork, individualWorkRate, workRatePerWorker;
        int numberOfWorkers;
        
        totalWork = sc.nextDouble();
        
        if(totalWork<=0)
        {
            System.out.println("Invalid input");
            return;
        }
        
        individualWorkRate = sc.nextDouble();
        numberOfWorkers = sc.nextInt();
        workRatePerWorker = sc.nextDouble();
        
        
        double IndividualWorker = -1;
        double GroupWorker = -1;
         
        if(!(individualWorkRate<=0))
        {
            double IndividualWorker = totalWork/individualWorkRate;
        }  
        
        if(!(numberOfWorkers<=0 || workRatePerWorker<=0))
        {
            double GroupWorker = totalWork/(numberOfWorkers*workRatePerWorker);
        }
        
        System.out.println(IndividualWorker);
        System.out.println(GroupWorker);
    }
}