= -3.14 *35.2 + 3.14 *(-46.6) - 3.14*18.2
=-3.14*(35.2+46.6+18.2)
=-3.14 *100
=-314
-3.14乘以35.2+6.28乘以(-23.3)-1.57 乘以36.4
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-3.14*35.2+6.28*(-23.6)-1.57*36.4