8x76x120x5=4x2x76x120x5=4x76x120x100=4(70+6)12000=(280+24)12000=304x12000
=(300+4)=300x12000+4x12000=3600000+48000=3648000
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8x76x120x5=4x2x76x120x5=4x76x120x100=4(70+6)12000=(280+24)12000=304x12000
=(300+4)=300x12000+4x12000=3600000+48000=3648000