#include <bits/stdc++.h>
using namespace std;
void __print(int x) { cerr << x; }
void __print(long x) { cerr << x; }
void __print(long long x) { cerr << x; }
void __print(unsigned x) { cerr << x; }
void __print(unsigned long x) { cerr << x; }
void __print(unsigned long long x) { cerr << x; }
void __print(float x) { cerr << x; }
void __print(double x) { cerr << x; }
void __print(long double x) { cerr << x; }
void __print(char x) { cerr << '\'' << x << '\''; }
void __print(const char *x) { cerr << '\"' << x << '\"'; }
void __print(const string &x) { cerr << '\"' << x << '\"'; }
void __print(bool x) { cerr << (x ? "true" : "false"); }
template <typename T, typename V>
void __print(const pair<T, V> &x) {
  cerr << '{';
  __print(x.first);
  cerr << ',';
  __print(x.second);
  cerr << '}';
}
template <typename T>
void __print(const T &x) {
  int f = 0;
  cerr << '{';
  for (auto &i : x) cerr << (f++ ? "," : ""), __print(i);
  cerr << "}";
}
void _print() { cerr << "]\n"; }
template <typename T, typename... V>
void _print(T t, V... v) {
  __print(t);
  if (sizeof...(v)) cerr << ", ";
  _print(v...);
}
void file_io() {
  freopen("input.txt", "r", stdin);
  freopen("output.txt", "w", stdout);
}
const int V = int(2e5);
const int INF = int(2e9);
int main() {
  int n;
  cin >> n;
  while (n--) {
    int c, sum;
    cin >> c >> sum;
    int t1 = sum / c;
    int t2 = t1 + 1;
    int ct2 = sum % c;
    int ct1 = c - ct2;
    ;
    long long ans = ct1 * 1ll * t1 * t1 + ct2 * 1ll * t2 * t2;
    cout << ans << endl;
  }
}
