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: [369, 197, 105, 154, 275, 446, 318, 216, 53, 195, 127, 451, 37, 491, 190, 317, 443, 386, 315, 77]
Output:
454