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1.02×2.54+0.98×0.5
=1.02×2.04+1.02×0.5+0.98×0.5
=1×2.04+0.02×2.04+2×0.5
=2.04+0.0408+1
=2.0808+1
=3.0808
=1.02×2.04+1.02×0.5+0.98×0.5
=1×2.04+0.02×2.04+2×0.5
=2.04+0.0408+1
=2.0808+1
=3.0808
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