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.

Example Input: [236, 128, 64, 438, 241, 141, 256, 492, 68, 462, 192, 426, 48, 366, 13, 26, 385, 320, 324, 137]
Example Output: 479

Example Input: [400, 268, 494, 256, 335, 438, 63, 89, 254, 464, 79, 157, 49, 481, 289, 111, 313, 217, 239, 308]
Example Output: 445

Example Input: [456, 236, 393, 387, 330, 131, 467, 381, 480, 165, 50, 143, 259, 138, 360, 299, 80, 248, 271, 462]
Example Output:
430

