8457*13=109941,8457*26=219882以此类推,可见规律为：8457每乘以13的一倍两倍三倍,结果都增加109941 ,你试试用结果下面一个结果减去上面一个结果测试看看是不是这样~~（例：8457*26=219882,8457*13=109941,用219882-109941看看结果~）希望对你有用!
咋写,l don't know.
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