Given the task definition, example input & output, solve the new input case.
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.
Example: ['238', 'h', '92', 'U', '2799']
Output: 3129
Here, the numbers in the input list are '238', '92' and '2799', hence their sum (238+92+2799) is 3129.

New input case for you: ['2937', '4513', 'O', 'm', 's']
Output:

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
7450