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]: ['6001', '6423', '5591', '8721', 't', 'x', '3723', 'E', 'F', '7353', 'b']
[A]: 37812


[Q]: ['8609', '8045', '2517', '3821', 'x', '3895', 't']
[A]: 26887


[Q]: ['6219', 'a', '3863', '1229', '7289', '2511', '3125', '1371', '6193', '5587', 'C', 'O', 'f', '4589']
[A]:
41976