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: [162, 32, 109, 191, 340, 80, 33, 310, 54, 100, 49, 93, 425, 156, 63, 155, 201, 426, 277, 64]
Example Output: 394

Example Input: [492, 205, 74, 388, 224, 64, 484, 446, 407, 102, 192, 398, 181, 215, 490, 90, 35, 358, 220, 368]
Example Output: 457

Example Input: [421, 390, 263, 376, 486, 468, 247, 60, 283, 304, 259, 431, 488, 127, 456, 148, 344, 377, 305, 407]
Example Output:
428