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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def RACC_calc(TOP, P, POP):
 """ Calculate random accuracy. :param TOP: test outcome positive :type TOP : int :param P: condition positive :type P : int :param POP: population :type POP:int :return: RACC as float """

    try:
        result = (TOP * P) / ((POP) ** 2)
        return result
    except Exception:
        return "None"