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.

[EX Q]: ['6815', 'A', '1055', '4687', '8675', '4615', 'a', '2127', 'w', 'l', 'J', '5025', 'c', 't', '9727', 'G', '8431']
[EX A]: 51157

[EX Q]: ['K', '4403', 'a', '3881', '4139', 'w', '1861', 'G']
[EX A]: 14284

[EX Q]: ['6679', '6127', 'S', 'B', '4905', 'R', 'B', '9711', '4383', '4551', '1463', 'c', '5331', '5559', '8025', '6305', '5281', 'F', 'g', '4055']
[EX A]:
72375