input: 
  def calculate_total_sum(data: list) -> int:
      """ Calculate the total sum of all elements in the given list.
      >>> calculate_total_sum([1, 9, 3, 5])
      18
      """
      total = 0
      for element in data:
          total += element
      return total
  
output:     total = 0
      for element in data:
          total += element
      return total