#include "bits/stdc++.h"
 
using namespace std;
 
int main() {
    int t;
    cin >> t;
    while (t--) {
        int l,r,d;
        cin >> l >> r >> d;
        if (d < l || d > r) cout << d << endl;
        else cout << (r/d +1)*d << endl;
    }
    return 0;
}
 
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