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: ['n', 'G', '5059', '8343', '8673', 'P', 'N', '5485', '2279', '6121', 'i', 'U', '7277', '8701', 'A', 'b', 'Z', 'R', '6371', 'G']

A: 58309
****
Q: ['8449', '7101', 'p', '7785', '5799', 'Z', 'Z', 'j', '4433', '9857', '629', 'F', '1671', 'l', 'm', '3569', 'C', 'U', 'j']

A:
49293
****