Detailed Instructions: In this task, you are given a list of integers you need to calculate and return the range of the integers which is the difference between maximum and minimum element in the list.
Q: [439, 406, 106, 253, 361, 393, 232, 269, 64, 208, 234, 354, 231, 307, 47, 31, 377, 80, 400, 294]
A:
408