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.

[EX Q]: [400, 268, 494, 256, 335, 438, 63, 89, 254, 464, 79, 157, 49, 481, 289, 111, 313, 217, 239, 308]
[EX A]: 445

[EX Q]: [415, 105, 125, 162, 344, 251, 265, 448, 131, 386, 316, 129, 470, 272, 109, 201, 127, 322, 68, 328]
[EX A]: 402

[EX Q]: [252, 475, 445, 300, 124, 55, 432, 249, 190, 45, 144, 15, 463, 426, 239, 407, 339, 195, 133, 79]
[EX A]:
460