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: ['K', 'O', 'p', '1669', '8647', '3417', 'a', '8903', 'V', 'E', 'l', 'a', '5177', 'J', '6559', '5377', 'X', '9427']

A: 49176
****
Q: ['135', 'a', 'X', '8067', '8447', '4009', '4221', 'o', 'A', 'x']

A: 24879
****
Q: ['H', 'B', '6763', 'L', '2109', 'm', 'q', '5561', '837', '747', '511', '1623', '4603', '3263', '3849', 'I', '7507', '7191', 'k', 'z']

A:
44564
****