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]: ['n', 'G', '5059', '8343', '8673', 'P', 'N', '5485', '2279', '6121', 'i', 'U', '7277', '8701', 'A', 'b', 'Z', 'R', '6371', 'G']
[EX A]: 58309

[EX Q]: ['4159', 'H', 'h', 'W', 'w', 'i', 'G', 'l', 'j', '5467', '9219', 'j', 'q', 'n', '5465', '6197', 'J', 'y']
[EX A]: 30507

[EX Q]: ['I', 'z', 'o', 'F', 'A', 'N', 'q', '7403', 'j', 's', 'P', '2541', 'j', '4299', 't']
[EX A]:
14243