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: [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: [436, 445, 238, 217, 70, 95, 88, 37, 410, 165, 299, 66, 115, 153, 26, 324, 294, 186, 300, 429]
Example Output: 419

Example Input: [154, 207, 64, 454, 323, 428, 319, 36, 273, 107, 16, 495, 206, 473, 367, 256, 460, 468, 478, 321]
Example Output:
479