关于-9999999999999999999*－966666666666666666在主流搜索中给您找到以下答案:
99999999*999999999 -- 360
运算技巧：9990999*3998-59975997*666 -- sougou
99999999*999999999
追问：不懂追答：什么地方不懂？追答：
运算技巧：9990999*3998-59975997*666
9990999*3998-59975997*666 =999*10001*3998-5997*10001*666 =(999*3998-5997*666)*10001 =(999*1999*2-1999*3*666)*10001 =(333*3*1999*2-1999*3*333*2)*10001 =0*1001 =0