Question

999*778+333*666怎么算？

Answer 1

999*778+333*666

=999×778+333×（3×222）
=999×778+（333×3）×222
=999×778+999×222
=999×（778+222）
=999×1000
=999000

Answer 2

999×778+333×666
=999×778+333×3×222
=999×778+999×222
=999×（778+222）
=999×1000
=999000

999×778+333×666=999000