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: ['V', '8137', 'b', 'k', '2081', 'L', '9733', '7525', 'D', '2381', 'O']

A: 29857
****
Q: ['e', '9777', '1835', 'N', '2425', '1427', 'o', '4459', '9961', '3285', '5199', 'x', 'e', '7727']

A: 46095
****
Q: ['z', 'O', 'J', '523', '3971', '2741', '4483', '239', 'j', 'F', 'u', 'E', 'z', '9739']

A:
21696
****