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:
[384, 282, 89, 347, 23, 113, 456, 134, 303, 110, 350, 114, 442, 62, 223, 370, 135, 73, 377, 469]

Ex Output:
446

Ex Input:
[471, 130, 251, 75, 238, 301, 215, 65, 69, 217, 122, 203, 15, 279, 149, 368, 478, 225, 67, 403]

Ex Output:
463

Ex Input:
[92, 439, 231, 76, 136, 498, 129, 426, 186, 252, 120, 314, 53, 131, 258, 45, 36, 239, 449, 321]

Ex Output:
462