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: [92, 439, 231, 76, 136, 498, 129, 426, 186, 252, 120, 314, 53, 131, 258, 45, 36, 239, 449, 321]
Example Output: 462

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: [400, 268, 494, 256, 335, 438, 63, 89, 254, 464, 79, 157, 49, 481, 289, 111, 313, 217, 239, 308]
Example Output:
445