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: ['4685', 'q', 'O', 'o', '3453', 'o', 'Y', 'C', 'a', 'i', '7283', 'J', 'n', 'Q', 'i']

A: 15421
****
Q: ['o', 'J', 'B', '7765', '7781', '5513', '8721', 'u', '9557', 'C', 'A', '1281', '6565', 'H', '5559', '1695', '7577']

A: 62014
****
Q: ['9667', 'W', 'b', '6475', 'q', 'O', '7455', '8771', 'Q', 'b', 'F', 'J']

A:
32368
****