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: ['p', 'V', '673', '8483', 'S']

A: 9156
****
Q: ['Y', '8169', '9067']

A: 17236
****
Q: ['3433', 'S', 'c', 't', '9347', '3441', 'y', '8697', '4419', '5949', 'h', 'a', 'c', 'Y', 'O', '8263', '3447', 'Q']

A:
46996
****