#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  ;
  int t;
  cin >> t;
  while (t--) {
    long long p, f, s, w, cntS, cntW;
    cin >> p >> f >> cntS >> cntW >> s >> w;
    if (s > w) {
      swap(cntS, cntW);
      swap(s, w);
    }
    long long ans = 0;
    for (long long i = 0; i <= cntS; i++) {
      if (i * s > p) break;
      long long sf = i;
      long long ss = min(f / s, cntS - i);
      long long leftf = p - sf * s;
      long long lefts = f - ss * s;
      long long wf = min(cntW, leftf / w);
      long long ws = min(cntW - wf, lefts / w);
      ans = max(ans, ss + sf + wf + ws);
    }
    cout << ans << endl;
  }
  return 0;
}
