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:
['8361', '6757', '5341', '2597', '9803', 'a', 'd', '5889', '9823', 'd', '7947', 'y', 'p']

Ex Output:
56518


Ex Input:
['901', '1939', '7637', '8863', 'X', '5003', '8791', '4757', 'E', '1525', 'y', '9735']

Ex Output:
49151


Ex Input:
['F', '1781', '7495', '9111', '6019', '6677', '2583', 'r', 'D', 'i', 'D', 'C', 'P', '4477', '8639']

Ex Output:

46782