#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  long long t;
  cin >> t;
  while (t--) {
    long long p, f;
    cin >> p >> f;
    long long cnt1, cnt2;
    cin >> cnt1 >> cnt2;
    long long s, w;
    cin >> s >> w;
    if (s > w) {
      swap(s, w);
      swap(cnt1, cnt2);
    }
    long long ans = 0;
    for (long long i = 0; i <= min(cnt1, p / s); i++) {
      long long cnt = i;
      long long tmpp = p - i * s;
      cnt += (min(cnt2, tmpp / w));
      long long tmpw = cnt2 - min(cnt2, tmpp / w), tmps = cnt1 - i;
      cnt += min(tmps, f / s);
      long long tmpf = f - min(tmps, f / s) * s;
      cnt += min(tmpw, tmpf / w);
      ans = max(ans, cnt);
    }
    cout << ans << endl;
  }
  return 0;
}
