input: def extract_decimal_portion(number: float) -> float:
      """ Provided with a positive float, this function breaks it down into
      its integer component (the largest integer less than the given float) and its decimal
      fraction (the remainder part always under 1).
  
      Return the fractional part of the number.
      >>> extract_decimal_portion(3.5)
      0.5
      """
output:     integer_part = int(number)
      decimal_part = number - integer_part
      return decimal_part