#include <bits/stdc++.h>
using namespace std;

int main() {
    int T;
    cin >> T;
    while(T--) {
        long long N; string S; cin >> N >> S;
        int p(0);
        for(int i = 0; i < (int)size(S); i++) if('0' <= S[i] && S[i] <= '9') { p *= 10; p += (int)(S[i]-'0'); }
        long long ans(0);
        for(int i = 1; i <= (int)min((long long)999, N); i++) {
            int X(p * i), Y((p + 1) * i - 1);
            if((X % 1000 == 0) || ((X / 1000) < (Y / 1000))) ans++;
        }
        ans += max(0LL, N - 999LL);
        cout << ans << endl;
    }
    return 0;
}