Question

计算：

2×4.6×9+4×9.2×18

1×2.3×4.5+3×6.9×13.5

=______．

Answer 1

2×4.6×9+4×9.2×18

1×2.3×4.5+3×6.9×13.5

，
=

2×(1×2.3×4.5)+4×(1×2.3×4.5)

1×2.3×4.5+3×(1×2.3×4.5)

，
=

(2+4)×(1×2.3×4.5)

(1+3)×(1×2.3×4.5)

，
=

3

2

．
故答案为：

3

2

．