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 Input:
['9125', '1443', '2303', 'O', '8463', '401', '3983', 'g', '4327', 'z', 'n', 'F', 'Q', 'j', '9885']

Ex Output:
39930


Ex Input:
['1875', '9833', 'i', '7493', 'J', 'P', 'z']

Ex Output:
19201


Ex Input:
['Q', 'o', 'r', 'D', '5987', 'V', 'q', '4823', '4807', 'o', '7145', 'd', '4259', 'H', 'I', 'J']

Ex Output:

27021