#include <bits/stdc++.h>
using namespace std;

int main()
{
    int64_t A, B, C;
    cin >> A >> B >> C;
    int64_t step = B + (A-1);
    int64_t tmp = C / step;
    int64_t tmp2 = A*tmp;
    tmp2 += C - (tmp*step);
    cout << tmp2 << endl;
    return 0;
}