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]: ['V', '8137', 'b', 'k', '2081', 'L', '9733', '7525', 'D', '2381', 'O']
[A]: 29857


[Q]: ['4161', 'E']
[A]: 4161


[Q]: ['3171', '7787', '3433', 'g']
[A]:
14391