Definition: 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: [493, 77, 40, 244, 311, 50, 336, 250, 157, 155, 350, 351, 71, 216, 26, 461, 37, 388, 243, 328]
Output:
467