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import java.util.*;
public class Main {
    static final long MOD = 1000000007;
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int T = sc.nextInt();
        while (T-- > 0) {
            int N = sc.nextInt();
            long ans = 1;
            for (int i = 0; i < N; i++) {
                int d = sc.nextInt();
                ans = (ans * d) % MOD;
            }
            System.out.println(ans);
        }
    }
}