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: [421, 390, 263, 376, 486, 468, 247, 60, 283, 304, 259, 431, 488, 127, 456, 148, 344, 377, 305, 407]
A: 
428