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: [222, 112, 48, 156, 440, 59, 107, 104, 320, 111, 268, 158, 368, 425, 163, 214, 495, 237, 270, 144]
A: 
447