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: [317, 61, 408, 261, 187, 150, 423, 259, 453, 163, 322, 201, 273, 312, 382, 64, 34, 358, 294, 299]
Example Output: 419

Example Input: [136, 71, 264, 213, 168, 416, 435, 215, 465, 114, 325, 93, 306, 212, 183, 455, 123, 274, 87, 412]
Example Output: 394

Example Input: [58, 158, 389, 274, 353, 290, 211, 433, 105, 405, 486, 177, 47, 395, 171, 458, 462, 38, 36, 373]
Example Output:
450