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: [227, 156, 78, 249, 225, 147, 125, 33, 316, 421, 208, 215, 186, 486, 53, 29, 207, 308, 176, 403]
Example Output: 457

Example Input: [384, 352, 257, 43, 338, 390, 410, 25, 402, 266, 244, 182, 161, 396, 315, 285, 113, 387, 42, 135]
Example Output: 385

Example Input: [294, 478, 112, 431, 387, 456, 125, 95, 341, 452, 103, 278, 28, 42, 172, 309, 235, 221, 381, 434]
Example Output:
450