#include <bits/stdc++.h>
#define int long long
using namespace std;

using LL = long long;

void solve(){

    int a, b, m;

    cin >> a >> b >> m;

    LL ans = 160 * 2;
    if(a > b * 2){
        ans += (m / b) * 160LL;
        cout << ans << "\n";
        return; 
    }
    if(a >= b){
        LL ans = 2;
        for(int i = 0; i <= m / b; i ++){ 
            LL res = i + 2;
            res += (m - i * 1LL * b) / a * 2LL;
            ans = max(ans, res);
        }
        cout << ans * 160 << "\n";
    }
    else{
        LL ans = 2;
        LL tot = b / a * a + (b % a == 0 ? 0 : a);
        // cout << tot << "\n";
        for(int i = 0; i <= m / tot; i ++){ 
            LL res = i * (tot / a + 1) + 2;
            LL sum = (m - tot * i);
            // cout << i << " " << res << " " << sum << "\n";
            res += sum / b * 1LL * (b / a + 1) + (sum - sum / b * b) / a;
            ans = max(ans, res);
        }
        cout << ans * 160 << "\n";
    }
}

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

/*
1
10 40 50

1
60 200 960
 */