In this task, you are given an input list A. You need to find all the elements of the list that are numbers and calculate their sum.

[EX Q]: ['b', 'i', '7807', 'g', '1611', '6733', 'V', '561', 'C', '8575', 's', 'E', '8129', 'F']
[EX A]: 33416

[EX Q]: ['2417', '6671']
[EX A]: 9088

[EX Q]: ['9379', 'i', '2775', 'C', 'L']
[EX A]:
12154