input: Write a function to calculate the average of five numbers entered by the user. The function should return the calculated average as a float.
  
  def calculate_average():
      nums = []
      for i in range(5):
          nums.append(int(input("Please enter number: ")))
      return sum(nums) / len(nums)
  
  assert calculate_average() in [2.0, 2.2, 2.4, 2.6, 2.8, 3.0]  
  assert calculate_average() in [5.6, 5.8, 6.0, 6.2, 6.4, 6.6, 6.8, 7.0]  
  assert calculate_average() in [9.0, 9.2, 9.4, 9.6, 9.8, 10.0]  
  assert calculate_average() in [4.0, 4.2, 4.4, 4.6, 4.8, 5.0]  
  assert calculate_average() in [12.0, 12.2, 12.4, 12.6, 12.8, 13.0]
output: def calculate_average():
      nums = []
      for i in range(5):
          nums.append(int(input("Please enter number: ")))
      return sum(nums) / len(nums)