128×0.25∧4
    256×0.25∧4
    256×（1/4）∧7/2＝
    256×（1/4）∧5
    256×（1/4）∧4
    256×（1/4）∧3
    72.8*(1+cos69.45)
    72.8*(1+cos62.20)
    72.8*(1+cos92.54)
    72.8*(1+cos76.27)
    72.8*(1+cos63.67)
    89.866×(1.232+6.7+3.1+1.619)+162.551×(1.805+1.4+3.1+1.619)+99.682×(0.664+3.1+1.619)+312.116×(1.445+1.619)+199.016×0.786
    99.682×(0.664+3.1+1.619)+312.116×(1.445+1.619)+199.016×0.786
    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 )

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