720.5×0.02
    550+27.5+80+220+21.5
    10*1.6*3.85+18*1*0.888+10*1.6*0.888+12*1*0.888+35*0.421*0.888
    800+40+80+220+21.5
    650+32.5+80+220+21.5=
    465+23+80+220+21.5
    380+19+80+220+21.5
    380+19+170+220+21.5
    122121212121212122121212121+1
    16*29.54*0.888+4*(286+3)*(0.363+0.238)*0.888
    5(3*3＾2-3*2)-(10*3＾2-6*3*2)
    tan225
    ln（5/3）+2*5/3-4
    ln（5/3）+2*5/3+4
    39*10.425*0.888+64*7.605*1.58+224*0.618*0.888+64*2.229*1.58
    10*4.013*1.58+18*1.456*0.888+10*3.813*1.58+16*1.356*0.888
    56*3.662*0.888+28*4.188*0.888+138*4.476*0.88869*5.002*0.888+10*12.912*0.888+8*11.723*0.888
    14*11.872*4.83+14*11.976*4.83+14*10.74*4.83+14*7.5*4.83+8*11.983*4.83+16*1.98*4.83+416*2.3*4.83
    20*【3/4】
    25.12/3.14/2

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