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: ['4685', 'q', 'O', 'o', '3453', 'o', 'Y', 'C', 'a', 'i', '7283', 'J', 'n', 'Q', 'i']

A: 15421
****
Q: ['C', 'q', '1899', '2055', '7497', '2225', '4379', 'c', 'B', 'l', 'e', 'M', '3073', 'M', 'R', '9687', 'j', 'I', '8625', '7413']

A:
46853
****