Detailed Instructions: 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.
See one example below:
Problem: [1,2,3,4,5,7,34,25]
Solution: 33
Explanation: maximum element is 34 and minimum element is 1, range is equal to the difference between 34 and 1 which is 33.

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