The task is to generate the correct answer for a given math problem.
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Question: Problem: how many quarters are equal to 7 dollars ?

Answer: 28

Question: Problem: by selling an article for $ 225 a person gains $ 75 . what is the gain % ?

Answer: 50 %

Question: Problem: in a group of 8 semifinalists , all but 2 will advance to the final round . if in the final round only the top 3 will be awarded medals , then how many groups of medal winners are possible ?

Answer:
56