You will be given a definition of a task first, then some input of the task.
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.

[212, 172, 67, 301, 134, 179, 233, 273, 351, 410, 431, 299, 247, 178, 357, 345, 304, 288, 455, 155]
Output:
388