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

SOLUTION: 428

PROBLEM: [44, 23, 60, 376, 408, 202, 423, 267, 326, 357, 200, 79, 178, 36, 230, 243, 220, 304, 168, 457]

SOLUTION: 434

PROBLEM: [317, 319, 328, 99, 216, 494, 141, 62, 36, 486, 422, 177, 120, 131, 114, 314, 301, 74, 331, 490]

SOLUTION:
458