#include <bits/stdc++.h>
using namespace std ;
#define pii pair<int,int>
#define x first
#define y second 
using ll = long long ;
using ull = unsigned long long ; 
const int MAXN = 0x3f3f3f3f ;
const ull base = 131 ;

void solve(){
	ll  n , a , b ;
	cin >> n >> a >> b ;
	if(n % b == 0){cout << n*a/b << '\n' ; return ;	}
	ll tmp = n%b ;
	int win_rou = 0 , all_rou = 0 ;
	for(int i = 1 ; i <= tmp ; ++ i ){
		if(i == 1){
			win_rou++;
			all_rou++;
			//cout << "      i : " << i << '\n' ;
			continue ;
		}
		if(win_rou*b <= all_rou*a){
			win_rou++;
			all_rou++;
			//cout << "      i : " << i << '\n' ;
		}else{
			all_rou++;
		}
	}
	ll ans = n / b * a ;
	ans += win_rou ;
	//cout << win_rou << ' ' << all_rou << '\n' ;
	cout << ans << '\n' ;

	return ;
}

int main(){
	ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	int T = 1 ; 
	cin >> T ;
	while(T--){
		solve();
	}		
}