#include<bits/stdc++.h>
using namespace std;
typedef long long LL;
typedef double db;
#define V vector
#define pb push_back
int main() {
    cout << fixed << setprecision(15);
    ios::sync_with_stdio(0), cin.tie(0);
    int t; cin >> t;
    while(t--) {
        db n; cin >> n;

        db a, v1, b, v2; cin >> a >> v1 >> b >> v2;

        if(a > b) swap(a, b), swap(v1, v2);

        cout << min({
            (n + (n - b)) / v2, 
            (n + b) / v2, 
            (n + a) / v1, 
            (n + (n - a)) / v1,
            (n + a + (n - b)) / (v1 + v2),
            max(a / v1, (n - a + (n - b)) / v2),
            max((n - b) / v2, (n - (n - b) + a) / v1),
            max((n - a) / v1, (n - (n - b)) / v2),
            max(a / v1, ((b - a) * 2 + (n - b)) / v2),
            max((n - b) / v2, (a + (b - a) * 2) / v1),
            2 * (b - a) / (v1 + v2) + max(a / v1, (n - b) / v2)
        }) << endl;
    }


}