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:
[167, 181, 218, 93, 105, 68, 94, 495, 301, 157, 121, 429, 411, 222, 78, 146, 399, 316, 465, 15]

Ex Output:
480

Ex Input:
[67, 194, 171, 237, 357, 306, 33, 32, 333, 104, 327, 444, 496, 362, 184, 307, 114, 82, 249, 246]

Ex Output:
464

Ex Input:
[288, 350, 334, 38, 293, 408, 397, 228, 243, 192, 349, 470, 141, 421, 356, 440, 153, 373, 417, 172]

Ex Output:
432