#include <iostream>
#include <iomanip>
#include <string>
#include <stdio.h>
#include <algorithm>
#include <vector>
#include <tuple>
#include <map>
#include<set>
#include<queue>
#include<stack>
#include <unordered_set>
//#include<bits/stdc++.h>

//cout << fixed << setprecision(3)
// static_cast<double>( )
//if(a < 0 || h <= a || b < 0 || w <= b)return;
// string abc = "abcdefghijklmnopqrstuvwxyz";
// string abc = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

using namespace std;
using ulli = unsigned long long int;
using lli = long long int;


int main(){
    int a, b, c;
    cin >> a >> b >> c;
    double ans = static_cast<double>(c) / b;
    cout << fixed << setprecision(9) << ans;
    return 0;
}