#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#include <cstdio>
const long long mod = 1e9+7;
long long g0;
long long first[1000005];

long long gcd(long long a,long long b){ return b?gcd(b,a%b):a; }

//pair that ax+by = k, mod
long long countPair(long long a,long long b,long long k,int left){
    if(first[left]==-1) return 0;
    else{
        long long s = first[left]*a;
        long long step = a*b/g0;
        if(s>k) return 0;
        else return (k-s)/step+1ll;
    }
}

void preWork(long long a,long long b){
    for(int i = 0; i < b; i++) first[i] = -1;
    int left = 0;
    int delta = a%b;
    int ptr = 1;
    first[0] = 0;
    long long maxn = a*b/(gcd(a,b)*a);
    while(ptr<=maxn){
        left += delta;
        if(left>=b) left -= b;
        if(first[left]==-1) first[left] = ptr;
        else break;
        ptr++;
    }
}

int main(){
    int T;
    scanf("%d",&T);
    while(T--){
    long long n,k,h;
    long long y;
    scanf("%lld%lld%lld%lld",&n,&k,&h,&y);
    preWork(k,h);
    long long step = k*h/gcd(k,h);
    long long ans = 0;
    long long left = (y+n)%h;
    long long delta = n%h;
    for(int i = 0; i*1ll*n<=y; i++){
        left -= delta;
        if(left<0) left += h;
        long long kk = y-i*1ll*n;
        if(first[left]!=-1){
            long long s = first[left]*k;
            if(s<=kk) ans +=((kk-s)/step+1ll);
        }
    }
    printf("%lld\n",ans%mod);
}
    return 0;
}