input: def calculate_distance(point1: tuple, point2: tuple) -> float:
      """ Calculates the distance between two points on a two-dimensional plane.
      Each point is represented as a tuple (x, y).
      >>> calculate_distance((3, 4), (-9, -2))
      13.601470508735444
      """
      return ((point2[0] - point1[0]) ** 2 + (point2[1] - point1[1]) ** 2) ** 0.5
output:     return ((point2[0] - point1[0]) ** 2 + (point2[1] - point1[1]) ** 2) ** 0.5