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: ['R', '3361', 'c', 'S', 'g', '3829', '7347', '6633', 'e', '9227']

A: 30397
****
Q: ['w', '8035', 'J', '2671', '7509', '1573', '6915', '8569', '345', 'T', 'P', 's', '1341', '7823', '8671', 'm', 'Q', 's', 'N']

A: 53452
****
Q: ['A', 'n', '9345', '4229', 'i', '427', '1565', '5783']

A:
21349
****