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:
[307, 405, 331, 295, 233, 108, 378, 147, 80, 460, 302, 75, 407, 399, 59, 37, 160, 286, 445, 86]

Ex Output:
423

Ex Input:
[377, 482, 52, 270, 282, 487, 39, 123, 474, 195, 367, 80, 97, 162, 54, 349, 480, 391, 73, 319]

Ex Output:
448

Ex Input:
[144, 234, 282, 68, 231, 327, 358, 303, 386, 317, 357, 320, 452, 464, 27, 302, 22, 412, 400, 110]

Ex Output:
442