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]: ['2039', '1679', '9675', 'S', 'J', '2069', 'r', 'e']
[A]: 15462


[Q]: ['8871', '1297', 'W', 'f', 'Y', '8731', '113', '6707', '379', '9631', 'X', 'C', 'q']
[A]: 35729


[Q]: ['h', '8891', 'N', 'w', 'S']
[A]:
8891