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: ['o', '7099', 'G', 'v', 'H', 'J', 'k', '1607', 'i', '9765', '2489', '8031']

A: 28991
****
Q: ['L', 'i', '9225', 'w', '5365', '8077', '2733', 'W', '8493', 'B']

A: 33893
****
Q: ['R', '1167', 'T', 'E', 'd', '2165', 'c', '6387', '9607', 'Y', 'g', '2809', '3843', 'M', '9889']

A:
35867
****