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0.38X1·4X1.5
=0.38x2x0.7x5x0.3
=0.38x2x5x0.7x0.3
=0.38x10x0.21
=0.38x2.1
=0.38x2+0.38x0.1
=0.76+0.038
=0.798
=0.38x2x0.7x5x0.3
=0.38x2x5x0.7x0.3
=0.38x10x0.21
=0.38x2.1
=0.38x2+0.38x0.1
=0.76+0.038
=0.798
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