#include<iostream>
using namespace std;
class worker{
    protected:
    double a;
    public:
    worker(double w){
        a=w;
    }
    virtual double b()=0;
};
class c:public worker{
    double rate;
    public:
    c(double w,double r):worker(w),rate(r){
}
double b(){
    return a/rate;
};
class d:public worker{
    int e;
    double f;
    public:
    d(double w,int n,double r):worker(w),e(n),f(r){
        
    }
    double b(){
        double totalrate=e*f;
        return a/totalrate;
    }
    
};
int main(){
    double a,indrate,rateeach;
    int num;
    cin>>a>>indrate>>num>>rateeach;
    
    c individual(a,indrate);
    d group(a,num,rateeach);
    
    cout<<individual.b()<<endl;
    cout<<group.b()<<endl;
    return 0;
}