func_code_string: #include <bits/stdc++.h>   using namespace std;   long long lol(long long a, long long b) { return a / b; }   int main() {     int n, a[300009];     cin >> n;     while (n--) {       long long s, a, b, c;       cin >> s >> a >> b >> c;       long long nani = s / c;       long long nande = nani / a;       long long kirito = nande * (a + b);       long long asuna = kirito + nani % a;       cout << asuna << endl;     }   }   