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: ['K', '9121', 'y', '4233', '1513', 'd', '5609', 'C', 'q', 'p', 'S', '627', 'q', 'I']

A: 21103
****
Q: ['3397', '1937', 'f', 'G', '8253', 'E', 'K', 's', '9209', 'R', 'a', 'f', '2439', '1691', '1081', '4879', '3279', 'Z', '4497', '9617']

A:
50279
****