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: [266, 432, 61, 375, 17, 111, 97, 172, 55, 305, 312, 474, 69, 321, 497, 403, 232, 245, 248, 318]
A: 
480