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.

Ex Input:
[335, 418, 355, 400, 167, 404, 466, 448, 183, 166, 216, 478, 457, 110, 342, 197, 370, 299, 384, 263]

Ex Output:
368

Ex Input:
[317, 61, 408, 261, 187, 150, 423, 259, 453, 163, 322, 201, 273, 312, 382, 64, 34, 358, 294, 299]

Ex Output:
419

Ex Input:
[14, 387, 138, 100, 359, 277, 422, 325, 326, 428, 111, 476, 247, 159, 424, 322, 55, 478, 66, 152]

Ex Output:
464