(2,1×0,18×1,5)/(7,5×8,4×2,7)=2,1/8,4 × 0,18/2,7 × 1,5/7,5=1/4 × 1/15 × 1/5=1/(4×15×5)=1/(60×5)=1/300
(2,1×1,8×1,5)/(7,5×8,4×2,7)=2,1/8,4 × 1,8/2,7 × 1,5/7,5=1/4 × 1/1,5 × 1/5=1/(4×1,5×5)=1/(6×5)=1/30
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(2,1×0,18×1,5)/(7,5×8,4×2,7)=2,1/8,4 × 0,18/2,7 × 1,5/7,5=1/4 × 1/15 × 1/5=1/(4×15×5)=1/(60×5)=1/300
(2,1×1,8×1,5)/(7,5×8,4×2,7)=2,1/8,4 × 1,8/2,7 × 1,5/7,5=1/4 × 1/1,5 × 1/5=1/(4×1,5×5)=1/(6×5)=1/30