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]: ['b', 'i', '7807', 'g', '1611', '6733', 'V', '561', 'C', '8575', 's', 'E', '8129', 'F']
[A]: 33416


[Q]: ['J', 'S', 'S', 'U', 'w', '7691', '7529', 'B', '3861', '4557', 'd', '569', '1547']
[A]: 25754


[Q]: ['9077', '625', 'S', 'S', 'w', 'z', '2891', 'X', 'E', 'K', '6153', '5877', 't', 'v', '9219', '6639', 'N', 'C']
[A]:
40481