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: [258, 453, 485, 246, 242, 312, 327, 319, 171, 39, 288, 292, 81, 93, 189, 223, 467, 489, 95, 408]

SOLUTION: 450

PROBLEM: [137, 17, 311, 292, 13, 135, 242, 16, 206, 183, 192, 77, 461, 124, 430, 50, 225, 230, 392, 354]

SOLUTION: 448

PROBLEM: [102, 268, 105, 118, 419, 57, 271, 365, 186, 342, 156, 131, 223, 471, 227, 317, 185, 424, 360, 478]

SOLUTION:
421