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]: ['6629', 'o', 'e', '497', '4865', '8733', '5733', '7337', 'N']
[A]: 33794


[Q]: ['o', '7099', 'G', 'v', 'H', 'J', 'k', '1607', 'i', '9765', '2489', '8031']
[A]: 28991


[Q]: ['8169', 'T', 'n', '2177', 'V', '7825', '661', '6851', '9807', '8437', 'o', 's', 'Q', 'd', 's', '7615', '963']
[A]:
52505