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: [306, 182, 345, 103, 81, 19, 470, 76, 333, 282, 82, 259, 357, 28, 382, 217, 298, 84, 351, 85]
Example Output: 451

Example Input: [390, 235, 102, 76, 462, 173, 267, 318, 400, 405, 270, 414, 196, 128, 336, 143, 181, 166, 498, 44]
Example Output: 454

Example Input: [44, 23, 60, 376, 408, 202, 423, 267, 326, 357, 200, 79, 178, 36, 230, 243, 220, 304, 168, 457]
Example Output:
434