Question

123×64+123×3639×4×5简便算法？

Answer 1

123×64+123×3639×4×5简便算法？
123×64+123×3639×4×5
=123×4x(16+3639×5)
=123x4x(16+18195)
=492x18211
=500x18211-8x18211
=18211000/2 -(182110-2x18211)
=9105500-182110+36422
=9141922-182110
=8959812

Answer 2

123*64+123*3639*4*5
=123*（64+3639*20）
=80652

Answer 3

123×（64+3639×20）？