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: [231, 84, 276, 334, 46, 324, 478, 407, 125, 212, 378, 288, 289, 162, 194, 376, 155, 379, 487, 323]
Example Output: 441

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: [326, 343, 257, 330, 387, 478, 173, 157, 120, 449, 172, 29, 336, 495, 331, 440, 95, 57, 175, 70]
Example Output:
466