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:
['1395', '3605', '6001', 's', 'h', 'T', 'K', 'X', '9413', 'X', '5099', 'c', 'f', 't', 'S', 'f', '4651']

Ex Output:
30164


Ex Input:
['3215', 'h', '9133', '2771', 'F', 'x', '9033', '709', 'q']

Ex Output:
24861


Ex Input:
['b', '1105', '4379', 'p', 'O', '2327', '9077', '3521', 'Z', '4891', '599', '4517', 'l', 'S']

Ex Output:

30416