#include <bits/stdc++.h>
using namespace std;
 
int main() {
    int t;
    cin >> t;
 
    while (t--) {
        int n;
        cin >> n;
 
        vector<int> a(n);
        int beg = INT_MAX;
 
        for (int i = 0; i < n; ++i) {
            cin >> a[i];
            beg = min(beg, a[i]);
        }
 
        int ans = 0;
        for (int i = 0; i < n; ++i) {
            if (a[i] >= 2 * beg) {
                ans += ceil(static_cast<double>(a[i]) / (2 * beg - 1)) - 1;
            }
        }
 
        cout << ans << "\n";
    }
 
    return 0;
}
 

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