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: ['901', '1939', '7637', '8863', 'X', '5003', '8791', '4757', 'E', '1525', 'y', '9735']

A: 49151
****
Q: ['k', '1489', 'x', '6543', 'I', 'l', 'D', '6299', '1473', 'a', '7661', 'z', 'E', 'Z', 'U', '3671', '2873', 'e', 'p']

A: 30009
****
Q: ['K', '4403', 'a', '3881', '4139', 'w', '1861', 'G']

A:
14284
****