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]: ['1493', 'x', 'h', '31', '3327', '1621', '4529', 'd', '377', 'R', 'X', 'Z', 'G']
[A]: 11378


[Q]: ['J', '177', '8449', '2067', 'a', 'G', 'p', 'd', '5161', 'M', '2403', '5541', 'q', '4375', 'O']
[A]: 28173


[Q]: ['C', 'r', 'd', 'O', 'A', '9891', 'j', 'm', '6817', 'j', '1379', '4687', '5215']
[A]:
27989