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]: ['2691', '3861', '7087', '4661', '6527']
[EX A]: 24827

[EX Q]: ['7361', '3605', 'V', '2039', '9665', 'X', 'b', '1195', '657', '6509', '7195', '2013', '1847', 'v', '9499', '1761']
[EX A]: 53346

[EX Q]: ['S', 'B', '1549', '763', 'B', '5089', '7801', '9737', '6425', '415', '8749', 'J', 'z']
[EX A]:
40528