120*38.1*0.01*4.83+60*38.1*0.01*3.85+320*38.1*0.01*0.888+120*77.2*0.01*4.83+60*77.2*0.01*3.85+320*77.2*0.01*0.888
    8964-2
    (15264-2237-545-410-450-250)/2
    15264-2237-545-410-450-250
    0.3÷3／10
    1-exp（-0.164）
    arctan（8/6）
    50*1281+25*2082-0.005*2082^2
    56545*256
    111111234+985633674635*4524537454
    55+55
    -(95*1569^2-298000*1569+132000000)/22
     -(95*1568^2-298000*1568+132000000)/22
     (95*1684^2-320000*1684+132000000)/22
    （95*1685^2-320000*1685+132000000）/22
    36-36*85%+36*10%
    lg26
    2189.64×6.91%
    2166.54×6.91%
    2126.81×6.91%

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