Chef and Chocolates

 Chef wants to gift 

C$C$ chocolates to Botswal on his birthday. However, he has only X$X$ chocolates with him.
The cost of 1$1$ chocolate is Y$Y$ rupees.

Find the minimum money in rupees Chef needs to spend so that he can gift C$C$ chocolates to Botswal.

Input Format

• First line will contain T$T$, number of test cases. Then the test cases follow.
• Each test case contains of a single line of input, three integers C,X,$C,X,$ and Y$Y$.

Output Format

For each test case, output in a single line answer, the minimum money in rupees Chef needs to spend.

Constraints

• 1≤T≤100$1\le T\le 100$
• 1≤C≤100$1\le C\le 100$
• 0≤X≤C$0\le X\le C$
• 1≤Y≤100$1\le Y\le 100$

Sample Input 1 

2
7 5 5
10 1 1

Sample Output 1 

10
9

Explanation

Test Case 1$1$: Chef has to gift a total of 7$7$ chocolates out of which he has 5$5$ chocolates. Thus, Chef needs to buy 2$2$ more chocolates, which costs him 10$10$ rupees.

Test Case 2$2$: Chef has to gift a total of 10$10$ chocolates out of which he has 1$1$ chocolate. Thus, Chef needs to buy 9$9$ more chocolates, which costs him 9$9$ rupees