#include <cstdio>
#include <algorithm>

int N;

int main() {
    int T; scanf("%d", &T);
    while (T--) {
        int A1 = 0, A2 = 0, B1 = 0, B2 = 0;
        scanf("%d", &N);
        for (int i = 1, x; i <= N; ++i) {
            scanf("%d", &x);
            if (x) A1 = i, A2 = x;
        }
        for (int i = 1, x; i <= N; ++i) {
            scanf("%d", &x);
            if (x) B1 = i, B2 = x;
        }
        if (A1 == B1) printf("%d/%d\n", A2 / std::__gcd(A2, B2), B2 / std::__gcd(A2, B2));
        else if (A1 < B1) puts("0/1");
        else if (A1 > B1) puts("1/0");
        else ;
    }
    return 0;
}