input: def get_stats_for_string(string: str) -> tuple:
      """
      Calculate the maximum, minimum, and mean number of elements in a given string.
      Note: The mean is calculated by taking the sum of the ASCII values of the characters
      in the string and then dividing by the length of the string.
      
      >>> get_stats_for_string("abc")
      ('c', 'a', 98.0)
      >>> get_stats_for_string("ABC")
      ('C', 'A', 66.0)
      """
      num_elements = len(string)
      max_element = max(string)
      min_element = min(string)
      mean_element = sum(ord(c) for c in string) / num_elements
      return (max_element, min_element, mean_element)
output:     num_elements = len(string)
      max_element = max(string)
      min_element = min(string)
      mean_element = sum(ord(c) for c in string) / num_elements
      return (max_element, min_element, mean_element)