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]: ['9125', '1443', '2303', 'O', '8463', '401', '3983', 'g', '4327', 'z', 'n', 'F', 'Q', 'j', '9885']
[A]: 39930


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


[Q]: ['T', '4237', '7297', 'E', '2059', '7299', 'F', '7709', '6739', '8499']
[A]:
43839