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: ['x', '5259', 'T', 'L', 'C', 'H', '2493', 'u', '3851', '2439', 'U']

A: 14042
****
Q: ['6347', '5495', '169', '9503', 'H', '571', '6105', 'X', 'r', 'e', '7369', 'a', 'd', '6999']

A: 42558
****
Q: ['9039', '3105', 'n', '6479', '9705', '6305', 'v', 'Q', '1421', '4481', 'B', 'W', 'Q', 'T', '8991', '6295', 'M', '625', '2527', '341']

A:
59314
****