9999*9999-1111*27/102*98
问题描述：
9999*9999-1111*27/102*98
答
(9999*9999-1111*27)/102*98
=[(10000-1)*9999-1111*9*3]/(100+2)(100-2)
=(10000*9999-9999-9999*3)/(10000-4)
=9999*(10000-1-3)/9996
=9999*9996/9996
=9999