code: def percent_of(percent, whole):
      
      percent = float(percent)
      whole = float(whole)
      return (percent * whole) / 100
docs: 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