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]: ['w', '8035', 'J', '2671', '7509', '1573', '6915', '8569', '345', 'T', 'P', 's', '1341', '7823', '8671', 'm', 'Q', 's', 'N']
[EX A]: 53452

[EX Q]: ['95', '279', 'y', 'p', '5083', 'X', 'E', '3817']
[EX A]: 9274

[EX Q]: ['8739', '5347', '2119', 'q', '7089', '8029', 'p', 'I', 'Y', '7907', '3559', 'x', '89', '3543', 'K', '9377']
[EX A]:
55798