89.866×(1.232+6.7+3.1+1.619)+162.551×(1.805+1.4+3.1+1.619)
    134.099×0.644
    10.18×(0.233+1.619)
    0.233+1.619
    0.5+2.9+6.7+3.1+1.619
    (18.36*16.5*5.52+20*13.51)/(17.83*(16.5+16.5)+30)
    (5.52-1)/(tan18.5 )
    e(πtan18.5 ) *（tan (45+18.5/2)）^2
    (2*0.923*16.03+22.8-16.03+（（22.8-16.03)^2+4*0.923*16.03*(22.8-16.03))^0.5)/(2*16.03*0.923)
    1.12^10
    1*[1.4*61+1.6*58+3.7*34+5.2*40+3.3*67+6.1*83+7.2*97+3*98+1.5*105]
    1.98/tan35
    8*20√2+6400/800
    1.619/3×(2×32.077+133.469)/(32.077+133.469)=
    1.619/2×(32.077+133.469)
    0.7/3
    0.7/2×29.087
    1.619/2×(112.382+133.469)
    1.619/3×(2×112.382+133.469)/(112.382+133.469)=
    1.619/2×(112.192+133.469)

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