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: [154, 425, 267, 492, 204, 337, 255, 79, 426, 101, 103, 230, 265, 80, 473, 340, 396, 394, 92, 69]
Output:
423