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class Solution:
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    def subtractProductAndSum(self, n: int) -> int:
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        n_to_list = list(str(n))
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        sum_of_digits = 0
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        for num in n_to_list:
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            sum_of_digits = sum_of_digits + int(num)
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        product_of_digits = 1
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        for num in n_to_list:
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            product_of_digits = product_of_digits * int(num)
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        answer = product_of_digits - sum_of_digits
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        return answer