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: [400, 268, 494, 256, 335, 438, 63, 89, 254, 464, 79, 157, 49, 481, 289, 111, 313, 217, 239, 308]
A:
445