#include <iostream>
#include <iomanip>
using namespace std;
double a,b;
double n;
int main(){
	cin>>a>>b;
	cout<<fixed<<setprecision(3)<<b/a*100<<"%"<<endl;
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
double a,b;
int main(){
	cin>>a>>b;
	double k=b/a;
	cout<<fixed<<setprecision(3)<<k*100<<"%"<<"\n";
	return 0;
}

#include <iostream>
#include <cstdio>
#include <iomanip>
#include <cmath>
using namespace std;
int we[100000000];
int main(){
	double a , b , c;
	cin >> a >> b;
	c = b / (1.0 * a) * 100;
	printf("%.3f" , c);
	cout << "%" << endl; 
	return 0;
}

#include <bits/stdc++.h>
using namespace std;
int main(int argc, char **argv){
	int a,b;
	cin >> a >> b;
	printf("%.3f%%",1.0 * b / a * 100);
	return 0;
}

#include<iostream>
#include<iomanip> 
using namespace std;
int main() {
	double a,b,c,d;
	cin>>a>>b;
	c=b/a;
	d=100*c;
	cout<<fixed<<setprecision(3)<<d<<"%";
	return 0;
}

#include <iostream>
#include <iomanip>
using namespace std;
double a,b;
double n;
int main(){
	cin>>a>>b;
	cout<<fixed<<setprecision(3)<<b/a*100<<"%"<<endl;
	return 0;
}

#include<bits/stdc++.h> using namespace std; int main(){ double a,b; cin>>a>>b; cout<<fixed<<setprecision(3)<<b/a*100<<"%"; return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ double a,b; cin>>a>>b; cout<<fixed<<setprecision(3)<<b/a*100<<"%"; return 0; }