Mathematics
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    【(-3/2)-4/9-(-11/18)】/(-1/36)
    (-0.78)/(-4/5)*(-14/13)
    (-0.28)/(-4/5)*(-14/13)
    (-1.75-5/9+19/12)/(-1/36)
    (-1.75-5/9+19/12)/(-36)
    19.5/6[(5.9+2.187)^3×0.27-2.187^3×3.69]=
    19.5/2.187[(5.9+2.187)^3×0.27-2.187^3×3.69]=
    !(64)
    acos0.86
    ((1^2+1.17^2-1.054^2)/2*1*1.17^2
    arcsin((1^2+1.17^2-1.054^2)/2*1*1.17^2
    arcsin((1^2+1.054^2-1.17^2)/2*1*1.054
    -5.6-8/3-[-2.6-10/3]
    1/6+9/2*(-1/3)^3+125%
    -7/4/[(-3/2)^2]*3/14
    9-1
    34.83*16.22+8.37*14.69+269.86*12.09+1557.04*4.39-(121.05*16.78+405.69*10.78+99.28*5.74+1243.57*2.25)
    485×6= 816×8= 652×8= 623×8= 126×6= 254×5= 563×3= 441×7=
    931×9= 164×8= 675×3= 825×8= 968×8= 324×4= 524×8= 484×2=
    853×5= 334×6= 366×5= 241×8= 284×9= 522×5= 513×3= 985×7=

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