input: 
  def calculate_average_of_five_numbers() -> float:
      """Calculate the average of five numbers entered by a user.
  
      Example:
      >>> calculate_average_of_five_numbers()
      Please enter number: 10
      Please enter number: 20
      Please enter number: 30
      Please enter number: 40
      Please enter number: 50
      The average is  30.0
      """
      nums = []
      for i in range(5):
          nums.append(int(input("Please enter number: ")))
      average = sum(nums) / len(nums)
      print("The average is ", average)
  
output:     return average