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.

Q: ['8809', '4559', '2715', 'w', '9903', 'h', 'u', 'F', '9369', '6149']

A: 41504
****
Q: ['o', 'a', 'K', '6031']

A: 6031
****
Q: ['z', '8265', '8447', 'e', '7251', '1479', 'd', '1953', 'X', 's']

A:
27395
****