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

[Q]: [279, 232, 368, 498, 109, 256, 237, 489, 381, 299, 440, 225, 182, 307, 58, 39, 173, 228, 485, 212]
[A]: 459

[Q]: [421, 296, 58, 388, 31, 70, 88, 68, 190, 453, 241, 314, 362, 106, 189, 321, 282, 84, 145, 212]
[A]:
422