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: ['135', 'a', 'X', '8067', '8447', '4009', '4221', 'o', 'A', 'x']

A: 24879
****
Q: ['9989', 'B', 'E', '5181']

A: 15170
****
Q: ['4501', '4425', 'N', 'S', '4467', '3629', '5551', '1545', 'p']

A:
24118
****