1.3/0.3×0.47^1.5×0.47^1.77/0.53
    1.3/0.3×0.40^1.5×0.40^1.77/0.6
    1.3/0.3×0.46^1.5×0.46^1.77/0.54
    1.3/0.3×0.45^1.5×0.45^1.77/0.55
    1.3/0.3×0.41^1.5×0.41^1.77/0.59
    1.3/0.3×0.44^1.5×0.44^1.77/0.56
    1.3/0.3×0.43^1.5×0.43^1.77/0.57
    1.3/0.3×0.42^1.5×0.42^1.77/0.58
    1.3/0.3×0.41^1.5×0.41^1.77/0.59
    1.3/0.3×0.40^1.5×0.40^1.77/0.60
    1.3/0.3×0.39^1.5×0.39^1.77/0.61
    1.3/0.3×0.016^1.5×0.016^1.77/0.984
    sqrt1.3/0.3×0.016^1.5×0.016^1.77/0.984
    sin30*cos30
    48+80-2*60
    89+65
    -1-0.75/(3/7)*(-6+27）
    A(10,3)
    -90＋arctan(12/0.1875)-arctan(12/0.028)-2arctan(12/12)
    -90＋arctan(1.5/0.1875)-arctan(1.5/0.028)-2arctan(1.5/12)

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