(6.9*0.21*0.57)除以(0.14*0.19*2.3)=?

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(6.9*0.21*0.57)除以(0.14*0.19*2.3)=?
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(6.9*0.21*0.57)除以(0.14*0.19*2.3)=?
(6.9*0.21*0.57)除以(0.14*0.19*2.3)=?

(6.9*0.21*0.57)除以(0.14*0.19*2.3)=?
(6.9×0.21×0.57)÷(0.14×0.19×2.3)
= (2.3×3×0.7×0.3×0.19×3)÷(0.7×0.2×0.19×2.3)
= (3×0.3×3)÷0.2
=2.7÷0.2
=13.5
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