（23*2.8+13.83*6.2）/9
    （18.3*2.8+17.8*6.2）/9
    (5.05*11.63+20.49*8.75+857.39*3.69+36.48*0.26-114.67*10.72-8.32*0.059)/5.72
    (5.05*7.81+13.92*4.93+379.97*1.89-57.39*0.61)/6.9
    1772.94*9.48+2827.96*3.11+103.05*24.5+359.97*19.5-1.25(1554.66*14.24+1952.35*3.2)
    894.87*7.86+363.77*2.06-103.05*15.01-359.97*10.01-792.96*1.74
    17.33*6.86+448.51*2.03-103.05*7.58-359.97*2.58
    (8.63*11.68+8.7*8.17+857.86*3.44+22.35*0.17-103.05*10.64-2.31*0.017)/5.64
    (8.63*7.94+8.7*4.43+362.66*1.75-51.13*0.6)/6.9
    5e
     (1/6)*(19/2)^2-5/6*(19/2)-4
    (1/6)*（19/2）^2-5/6*（19/2）-4
    [11/4]=
    150-118
    150*72%
    150*6.66666666666666666666666666667%
    150-12*9+10
    150*6.67%
    150*0.72
    e^(-0.42516274-0.0057890212*e+0.043244958)*(-0.0057890212+2*0.043244958*1/e)

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