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(0.02*4200*100+2257000*0.02 + 100*14+ 0.3*4200*14 - 334000*0.05) /(100+4200(0.05+0.3+0.02))
(0.02*4200*100+2257000*0.02 + 100*14+ 0.3*4200*14 - 334000*0.05) /(100+4200(0.05+0.3+0.02))
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