def percent_of(percent, whole):
    """Calculates the value of a percent of a number
    ie: 5% of 20 is what --> 1
    
    Args:
        percent (float): The percent of a number
        whole (float): The whole of the number
        
    Returns:
        float: The value of a percent
        
    Example:
    >>> percent_of(25, 100)
    25.0
    >>> percent_of(5, 20)
    1.0
    
    """
    percent = float(percent)
    whole = float(whole)
    return (percent * whole) / 100