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: [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: [40, 208, 12, 109, 408, 270, 344, 281, 153, 453, 166, 266, 157, 433, 68, 17, 201, 234, 169, 42]
Example Output: 441

Example Input: [399, 231, 174, 281, 329, 160, 313, 237, 139, 229, 104, 50, 328, 433, 92, 201, 95, 385, 407, 41]
Example Output:
392