174.63/6.59
    12*sin(72+32.18)/sin(75.82-72)
    2/3*14.3*785.398*0.5*(sin(0.3*3.1415926))^3/3.1415926+360*12.271*0.425*(sin(0.3*3.1415926)+sin(0.65*3.1415926))/3.1415926
    12*sin32.18/sin75.82
    2/3*14.3*785.398*0.5*(sin(0.13*3.1415926))^3/3.1415926+300*4.825*0.425*(sin(0.13*3.1415926)+sin(0.99*3.1415926))/3.1415926
    180-32.18-72
    2/3*14.3*785.398*0.5*(sin(0.13*3.1415926)^3/3.1415926+300*4.825*0.425*(sin(0.13*3.1415926)+sin(0.99*3.1415926))/3.1415926
    ((6)^2+(6*3^0.5)^2)^0.5*((1)^2+(6*3^0.5)^2)^0.5*((14)^2+(6*3^0.5)^2)^0.5
    180+arctan(6*3^0.5/(-6))+arctan(6*3^0.5/(5-6))+arctan(6*3^0.5/(20-6))
    180+arctan(13.1/(-5.7))+arctan(13.1/(5-5.7))+arctan(13.1/(20-5.7))
    arctan0.92
    3737373737/7373737373*3
    -arcsin(13.1/(-5.7))-arcsin(13.1/(5-5.7))-arcsin(13.1/(20-5.7))
    0.75*(-8)-(-15)*（-5/3)
    -arctan(13.1/(-5.7))-arctan(13.1/(5-5.7))-arctan(13.1/(20-5.7))
    -arctan(6*3^0.5/(-6))-arctan(6*3^0.5/(5-6))-arctan(6*3^0.5/(20-6))
    8.3*3.7-1.11
    【2004-2.4】+【2002+2004.02-2002.04】-【0.5-2004.02+2002】+2002.04-101；8.3*3.7-7.4
    2010-【2010.09-2009.10+1】+【2.4+2010-2009.10】-2009.10+1；2005+【2009*2005-2008.9*2004.9+1】+【1.6+【2005-2004】/2.5-1】*2004
    4.7×1.08^3×2.33^5×1060

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