原式=(333+3)*667+111*999
=333*667+3*667+333*333
=333*(667+333)+3*667
=333*1000+2001
=333000+2001
=335001题错了是333*667+111*999333*667+111*999=333*667+111*3*333=333*667+333*333=333*(667+333)=333*1000=333000