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Brian spent $$\frac{1}{4}$$ of his paycheck to repair his car, and then paid the registration and insurance, which each cost $$\frac{1}{4}$$ of the remainder of his paycheck. If Brian had $0 before he was paid, and he now has $231 left, what was the amount of his paycheck?
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以上解析由 考满分老师提供。
