Solve the programming task below in a Python markdown code block.
A football league of N teams is taking place, where each team plays other teams once in [single round robin] fashion. A team gets 3 points for winning a game and 0 for losing (assume that no games end in a draw/tie). What is the maximum possible difference of points between the winning team and the second-placed team?

------ Input Format ------ 

- The first line of input will contain a single integer T, denoting the number of test cases. Then the test cases follow.
- Each test case consists of a single line of input, containing a single integer N.

------ Output Format ------ 

For each test case, output in a single line the maximum difference of points between first and second place.

------ Constraints ------ 

$1 ≤ T ≤ 10^{5}$
$2 ≤ N ≤ 10^{9}$

----- Sample Input 1 ------ 
4
2
3
4
9
----- Sample Output 1 ------ 
3
3
6
12
----- explanation 1 ------ 
Test case $1$: There will only be one match played between the two teams, therefore one team wins by $3$ points.

Test case $2$: Let the three teams be A, B, C. If team A wins both the games against team B and team C, then team A will win by $3$ points since one of team B and team C will win the game between them.

Test case $3$: Let the four teams be A, B, C, D. One possibility is for A to win all its games, and then B beats C, C beats D, D beats B. This way, the winner has $9$ points and second place has $3$ points, making a difference of $6$.

Test case $4$: It can be shown that it's not possible to achieve a difference higher than $12$ when $9$ teams play. One way of achieving this is for the winner to score $24$ points and second place to score $12$.