>>642
>>629式2
32.4 ÷ 0.24 × 8.4 ÷ 1.4 × 0.25 =324×84/24×1.4×4
=(54/4)(21/1.4)
=(27/2)15
=13.5×15
=150+45+7.5
=195+7.5
=202.5