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.
Q: [70, 109, 401, 280, 337, 361, 195, 49, 127, 151, 100, 140, 272, 81, 494, 351, 134, 207, 399, 306]
A:
445