#include<bits/stdc++.h>
#define il inline
#define vd void
typedef long long ll;
il ll gi(){
    ll x=0,f=1;
    char ch=getchar();
    while(!isdigit(ch))f^=ch=='-',ch=getchar();
    while(isdigit(ch))x=x*10+ch-'0',ch=getchar();
    return f?x:-x;
}
int f[1010],g[1010];
int main(){
#ifdef XZZSB
    freopen("in.in","r",stdin);
    freopen("out.out","w",stdout);
#endif
    int T=gi();
    while(T--){
        int n=gi()-1;
        for(int i=0;i<=n;++i)f[i]=gi();
        for(int i=0;i<=n;++i)g[i]=gi();
        int pf=n,pg=n;
        while(!f[pf])--pf;
        while(!g[pg])--pg;
        if(pf>pg){puts("1/0");continue;}
        else if(pf<pg)puts("0/1");
        else{
            int A=f[pf],B=g[pg],g=std::__gcd(A,B);
            printf("%d/%d\n",A/g,B/g);
        }
    }
    return 0;
}