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]: ['2729', 'W', 'i', '9073', '343', 'j', '2329', '9159', '4825']
[EX A]: 28458

[EX Q]: ['6585', '5263', '9497', '1117', 'a', 'F', 'w', '6595', '547']
[EX A]: 29604

[EX Q]: ['F', 'v', 'G', '6023', 'M', 'Q', 'A', '8477', '2079', 'A', '813', 'C', '3479', 'G', '1977', '5569', '8749', 'Y']
[EX A]:
37166