#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <limits.h>
#include <stack>
#include <queue>
#include <map>
#include <set>
#include <algorithm>
#include <string>
#include <functional>
#include <vector>
#include <numeric>
#include <deque>
#include <utility>
#include <bitset>
#include <iostream>
using namespace std;
typedef long long lint;
typedef long double llf;
typedef pair<int, int> pi;
const int mod = 1e9 + 7;
lint ipow(lint x, lint p){
lint ret = 1, piv = x % mod;
while(p){
if(p&1) ret *= piv;
piv *= piv;
ret %= mod;
piv %= mod;
p >>= 1;
}
return ret;
}
int main(){
int t;
cin >> t;
while(t--){
lint r, g, b, k;
cin >> r >> g >> b >> k;
lint ret = k + r * (1 - ipow(b * ipow(b+1, mod - 2), k) + mod);
ret += (g * k) % mod * ipow(b, mod - 2);
cout << ret % mod << endl;
}
}
