input: def calculate_fibonacci(position: int) -> int:
      """ Calculate the Fibonacci number at a given position using recursion.
      >>> calculate_fibonacci(0)
      0
      >>> calculate_fibonacci(1)
      1
      >>> calculate_fibonacci(10)
      55
      """
output:     if position == 0:
          return 0
      elif position == 1:
          return 1
      else:
          return calculate_fibonacci(position - 1) + calculate_fibonacci(position - 2)