问一道英语奥数题 5
Uponleavingthecafe,oneboypaidhisbill,whilehisfriendhandedthecashieraslipofpaperwithth...
Upon leaving the cafe,one boy paid his bill, while his friend handed the cashier a slip of paper with the number 1004180 on it. The Cashier smiled and let him pass without paying Why? What the number 1004180 mean?
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