(16549.056+15268.32)/(9980.928+10455.84+2200)
    12×1272.36
    106.03×12
    （π×〖12.5〗^2×360）/1000
    160×2237.8×10^(-3)
    290.44×1.5×2.4×10
    12×150×3.14×2.44×1.2
    346.56×1.2×2.4×10
    346.56－π×(2.44/2)^2×12
    364.56－π×(2.44/2)^2×12=
    √((9.09×98.18)/(1000×1.57))+0.3
    0.0113×84.96×〖8.5〗^2
    0.0321×84.96×6^2
    1.5×24×1.4+1.2×24×1.2
    1.5×1/2×4
    abs-3
    2^3
    1.80623E+18
    1.80623E+18
    1-1

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