(12*21*45*10.2)/(15*4*0.7*5.1)简算

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(12*21*45*10.2)/(15*4*0.7*5.1)简算
(12*21*45*10.2)/(15*4*0.7*5.1)
简算

(12*21*45*10.2)/(15*4*0.7*5.1)简算
(12*21*45*10.2)/(15*4*0.7*5.1)
=(3x4x3x7x5x9x5.1x2)/(3x5x4x0.7x5.1)
=(3x10x9x2)
=540