数学简算1234*432143214321-1234*123412341234

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数学简算1234*432143214321-1234*123412341234
数学简算1234*432143214321-1234*123412341234

数学简算1234*432143214321-1234*123412341234
1234*(432143214321-123412341234 )
=1234*308730873087
=380973897389358