arcsin((108-126sin(0+20))/68)
    arcsin((110-126sin(0+20))/68)
    arcsin((110-126sin(0+20))/67)
    arcsin((110-126sin(0+20))/66)
    arcsin((110-125sin(0+20))/70)
    arcsin((110-125sin(112+20))/70)
    arcsin((110-126sin(112+20))/70)
    arcsin((110-126sin(0+20))/70)
    arcsin((112-126sin(0+20))/70)
    arcsin((108-126sin(0+20))/70)
    arcsin((130-144sin(111+20))/84)
    arcsin((108-126sin(112+20))/70)
    (6*555.506)/(19.6*(1.580-0.633))
    (6*555.506)/(19.6*(1.580-0.633))^0.5
    12.862+106.982+753.649-39.87-278.117
    (88.3-50.28)/（19.6×（1.58-0.633））
    12.862*(0.3857+4.6+5.258)+106.982*((4.6-0.458)/2+5.258)+426.395*2.277-167.918*0.892-39.87*(8.71-1.5+5.258)
    (50.28+113.702)*2.048*0.5
    (48.477+113.712)*5.258*0.5
    19.6*2.048*1.58+2*20*1.257

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