how to calculate permutations
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I have a video game related math question involving permutations. In a certain video game, you have 25 characters. Each character has 60 costumes. Each character also has 3 groups of items they can customize, and 30 items in each group, for a total of 90 items for each character. My question is: How many different permutations of costumes and items are available for each character?
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