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(5.87+1514+2.13+914)×(234-1.75)+(1÷27-3.5)×3.99,=[(5.87+2.13)+(1514+914)]×(2.75-1.75)+(72-3.5)×3.99,=[8+2]×1+(3.5-3.5)×3.99,=10×1+0,=10.
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