Definition: 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.
Input: [390, 297, 253, 424, 278, 21, 412, 238, 69, 435, 437, 87, 118, 201, 366, 345, 46, 151, 351, 71]
Output:
416