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

SOLUTION: 480

PROBLEM: [269, 494, 422, 139, 436, 445, 135, 101, 467, 133, 206, 434, 217, 215, 353, 374, 59, 70, 155, 267]

SOLUTION: 435

PROBLEM: [144, 25, 209, 322, 402, 157, 242, 368, 289, 356, 485, 106, 104, 377, 355, 29, 62, 239, 253, 186]

SOLUTION:
460