numerator: ways to get 4 aces before 1 joker in a deck of 53 cards
denominator: ways to deal 53 cards
A successful dealing will look like this:
aAbAcAdAeJf where the sum of a through f is 48.
So the question is really asking you how many ways you can have 6 integers sum to 48, then divide by the number of ways to deal 53 cards.
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