input: from typing import List
  
  def calculate_average(numbers: List[int]) -> float:
      """Calculate the average of five numbers entered by a user.
      
      >>> calculate_average([5, 10, 15, 20, 25])
      15.0
      >>> calculate_average([1, 2, 3, 4, 5])
      3.0
      """
      return sum(numbers) / len(numbers)
output:     return sum(numbers) / len(numbers)