#include <cstdio>
#include <clocale>
 
using namespace std;
 
void printfcomma (int n) {
    if (n < 1000) {
        printf ("%d", n);
        return;
    }
    printfcomma (n/1000);
    printf (",%03d", n%1000);
}
 
int main()
{
    int T;
    scanf("%d", &T);
 
    setlocale(LC_ALL, "en_US.UTF-8");
 
    for (int t = 1; t <= T; ++t)
    {
        double total = 0, current;
 
        for (int i = 0; i < 12; ++i)
        {
            scanf("%lf", &current);
            total += current;
        }
 
        printf("%d $%'.2lf\n", t, total / 12.0);
    }
}

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1
100.00
489.12
12454.12
1234.10
823.05
109.20
5.27
1542.25
839.18
83.99
1295.01
1.75