text: # Write your solution here
  def range_of_list(list):
      order_list = sorted(list)
      return order_list[-1]-order_list[0]
  # You can test your function by calling it within the following block
  if __name__ == "__main__":
      my_list = [3, 6, -4]
      result = range_of_list(my_list)
      print(result)