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: ['W', '3561', '4631', '8379', 'W', '6857', '2723', '5393', 'h', 'g', 't', 'I', 'R', '2321', 'l']

A: 33865
****
Q: ['N', '7299', 'x', '4303', 'J', '6501', '3469', 'w', 'Q', '6621', 'j', '9077', 'r', 'A']

A:
37270
****