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: [390, 297, 253, 424, 278, 21, 412, 238, 69, 435, 437, 87, 118, 201, 366, 345, 46, 151, 351, 71]
Example Output: 416

Example Input: [269, 494, 422, 139, 436, 445, 135, 101, 467, 133, 206, 434, 217, 215, 353, 374, 59, 70, 155, 267]
Example Output: 435

Example Input: [202, 124, 414, 49, 223, 298, 466, 495, 472, 87, 37, 360, 305, 339, 151, 59, 362, 52, 293, 434]
Example Output:
458