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]: ['7087', 'P', 'i', 'e', '4875', 'e', 'F']
[A]: 11962


[Q]: ['2087', '8171', 'c', 'd', 'a', '5621', 'n']
[A]: 15879


[Q]: ['4285', '1489', '9439', '8237', '4661', '3015', '2361', '7631', 't', 'A', '1697', 'H', '3601', '5399', 'J', '9233', '9157', 'H', 'Y', '1449']
[A]:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
71654


