#include <bits/stdc++.h>
using namespace std;
int main() {
  int t;
  cin >> t;
  while (t--) {
    long long int n, x;
    cin >> n >> x;
    long long int a[n];
    for (int i = 0; i < n; i++) {
      cin >> a[i];
    }
    sort(a, a + n);
    int j = 1, teams = 0;
    for (int i = n - 1; i >= 0; i--) {
      if (a[i] * j >= x) {
        teams++;
        j = 0;
      }
      j++;
    }
    cout << teams << endl;
  }
}
