# ZeroJudge - a248: 新手訓練 ~ 陣列應用
### 題目連結：https://zerojudge.tw/ShowProblem?problemid=a248
###### tags: `ZeroJudge` `數學` `模擬`

#include <iostream>
using namespace std;

static const auto Initialize = [] {
	cin.sync_with_stdio(false); cout.tie(nullptr);
	return nullptr;
}();

int main() {
	int numerator, denominator, length;
	while (cin >> numerator >> denominator >> length) {
		cout << numerator / denominator << '.';
		numerator %= denominator;
		while (length--) {
			numerator = (numerator << 3) + (numerator << 1);
			cout << numerator / denominator;
			numerator %= denominator;
		}
		cout << '\n';
	}
}