#include <bits/stdc++.h>
using namespace std;
int main() {
  int t;
  cin >> t;
  while (t--) {
    int n, x, a = 0, e = 0;
    cin >> n >> x;
    int arr[n];
    for (int i = 0; i < n; i++) {
      cin >> arr[i];
    }
    sort(arr, arr + n, greater<int>());
    for (int i = 0; i < n; i++) {
      e++;
      if (e * arr[i] >= x) {
        e = 0;
        a++;
      }
    }
    cout << a << endl;
  }
}
