Detailed Instructions: The task is to generate the correct answer for a given math problem.
Q: Problem: in the mundane goblet competition , 6 teams compete in a " round robin " format : that is , each team plays every other team exactly once . a team gets 3 points for a win , 1 point for a tie ( a draw ) , and 0 points for a loss . what is the difference between the maximum total points and the minimum total points that can be gained by all teams ( added together ) in the mundane goblet competition ?
A:
15