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]: ['8147', '3191']
[A]: 11338


[Q]: ['6723', '1', '6357', '1497', 'A', 'p', 'N', 'T']
[A]: 14578


[Q]: ['9977', 'v', 's', '8593', '6977']
[A]:
25547