#ifndef akinyan #define akinyan #include <bits/stdc++.h> using namespace std; using ch = char; using ll = long long; using ld = long double; using db = double; using st = string; using vdb = vector<db>; using vvdb = vector<vdb>; using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>; using vd = vector<ld>; using vvd = vector<vd>; using vs = vector<st>; using vvs = vector<vs>; using vc = vector<ch>; using vvc = vector<vc>; using vb = vector<bool>; using vvb = vector<vb>; using vvvb = vector<vvb>; const ll mod = 998244353; const ll MOD = 1000000007; const ll INF = 1000000000000000000LL; using pall = pair<ll,ll>; using vp = vector<pall>; #endif int main(){ ll A,B,X; cin>>A>>B>>X; cout << (X / A + (X % A != 0)) * B << endl; }