input: Write a function to calculate the average of five numbers entered by a user. Prompt the user to enter each number individually. Return the calculated average as a float.
  
  def calculate_average():
      nums = []
      for i in range(5):
          nums.append(int(input("Please enter number: ")))
      average = sum(nums) / len(nums)
      return average
  
  assert calculate_average() == 3.0 # assuming the user enters 1, 2, 3, 4, 5
  assert calculate_average() == 0.0 # assuming the user enters -1, 0, 1, 0, 0
  assert calculate_average() == 10.0 # assuming the user enters 10, 10, 10, 10, 10
output: def calculate_average():
      nums = []
      for i in range(5):
          nums.append(int(input("Please enter number: ")))
      average = sum(nums) / len(nums)
      return average