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: ['b', '5689', '119', 'p', 'P', 'J', 'w', 'm', '7397', 'Y', '447', 'O', 'p', '319', 'H', 'U']

A: 13971
****
Q: ['t', 'v', 'B', 'Y']

A: 0
****
Q: ['E', '8295', '8717']

A:
17012
****