0.01÷0.0053
    0.08∧1.10
    0.04∧1.10
    0.08∧1.12
    1 * （1+0.26）^10
    arccos(0.074)
    arccos(353.37/367.01)
    arccos(95.3/367.01)
    arccos(27.32/367.01)
    1000/(1-(1+(0.075/28)^(-336))/(0.075/28))
    arctan(5/4)
    arctan(4/5)
    arctan(6.4/8)
    arctan(7.07/8)
    arctan(5/8)
    arctan(-5/8)
    sin(9.7)
    49*49*39
    50*1950/(39.795918+1950)
    1.3+0.04013*（3+0.64）

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