1999*1999-888/111+1999*1998=
问题描述:
1999*1999-888/111+1999*1998=
答
1999*1999-888/111+1999*1998
=(2000-1)(2000-1)-8+(2000-1)(2000-2)
=4000000-2000-2000+1-8+4000000-4000-2000+2
=8000000-100000-5
=7899995