123123×321+321321×123

问题描述:

123123×321+321321×123

123123x321+321321x123
=123x1001x321+321x1001x123
=123x321x1001x2
=79044966

123123×321+321321×123
=123×321×(1001+1001)
=123×321×2002
=79044966