#include<iostream>
using namespace std;
int main()
{
	long long n;
	cin >> n;
	double a, b, c;
	for (int i = 0; i < n; i++)
	{
		cin >> a >> b >> c;
		double d;
		if (a < b)
		{
			d = a;
			a = b;
			b = d;
		}
		printf("%.lf\n", c + a / b * c);
	}
}