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: ['7231', '2813', '51', '1745', 'c', 'a', '4929', '3185', '5707', '2095', 'f', 'S']

A: 27756
****
Q: ['8739', 'K']

A: 8739
****
Q: ['4509', '4165', '8651', '8057', 'a', '2241', 't', 'i', 'q', 'S', '5149', 'J', 'j', '1373', 'W', 'X', '235', 'm', '3225']

A:
37605
****