#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int t;
  cin >> t;
  while (t--) {
    long long n, x;
    cin >> n >> x;
    long long a[n];
    for (long long i = 0; i < n; i++) cin >> a[i];
    ;
    sort(a, a + n);
    long long cnt = 0, ans = 0;
    for (long long i = n - 1; i >= 0; i--) {
      cnt++;
      if (a[i] * cnt >= x) {
        cnt = 0;
        ans++;
      }
    }
    cout << ans << "\n";
  }
}
