input: def get_stats_for_string(string: str) -> tuple:
      """
      Calculate the maximum character, minimum character and the mean of the ASCII values of the characters in a given string.
      >>> get_stats_for_string("abcdef")
      ('f', 'a', 100.0)
      >>> get_stats_for_string("Hello")
      ('o', 'H', 100.0)
      """
      num_elements = len(string)
      max_element = max(string)
      min_element = min(string)
      mean_element = sum(ord(char) for char 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(char) for char in string) / num_elements
      return (max_element, min_element, mean_element)