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]: ['e', 'K', 'A', 'V', '1169', 'n', '8729', 'V']
[A]: 9898


[Q]: ['29', 'N', '5061', '7191', 'z', '8367']
[A]: 20648


[Q]: ['535', 'n', '7015', '9375', 'k', '7613', '1929', 'J', '925']
[A]:
27392