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    sin5.5
    sin(5.5)
    3.14×(80÷2÷100)²×15
    12000*100+12000/56569*40+56569/2*3%*100
    1/8×299×21^2+1000×21/4+1000×20/21×0.53
    √(2*8000*30/3%*100)
    √(2*12000*40/3%*100)
    1×19.1×21340×49.72×(1140-49.72/2)+300×27947×(1140-6)
    (300×95509-300×27947)/(1×19.1×21340)
    75×π×8^2+16×π×16^2
    1/8×330×17^2+2000×17/4+1000×16/17×0.53
    1000×17/4+1000×16/17×0.53
    1/8×299×17^2
    1×19.1×21340×48.1×(1140-48.1/2)+300×30159×(1140-10)
    (300×95509-300×30159)/(1×19.1×21340)
    51×π×7^2+154×π×〖12.5〗^2+15×π×16^2
    1×19.1×21340×58.16×(1140-58.16/2)+300×30159×(1140-10)
    (300×109181-300×30159)/(1×19.1×21340)
    51×π×7^2+154×π×〖12.5〗^2+32×π×16^2
    (300×785238-300×30159)/(1×19.1×21340)

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