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.
One example: [1,2,3,4,5,7,34,25]
Solution is here: 33
Explanation: maximum element is 34 and minimum element is 1, range is equal to the difference between 34 and 1 which is 33.

Now, solve this: [209, 106, 76, 239, 240, 168, 129, 479, 22, 318, 39, 325, 341, 55, 130, 71, 345, 485, 285, 246]
Solution:
463