Instructions: 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.
Input: [255, 356, 96, 399, 326, 62, 432, 365, 253, 188, 86, 262, 421, 499, 481, 345, 155, 110, 171, 107]
Output:
437