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.

['6515', '5525', 'o', 'Q', '9049', 'f', 'p', 'X', '2057', 'h', '7585', '3617', '7817']
42165

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

['Q', '8211', '2757', '925']

11893