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.

['U', '5885', 'u', 'Y', 's', 'w', 'j', '9629', '9505', 'U']
25019

['e', 'T', 'O', 'q', '5511', 'G', 'm', 'E', '2153', 'O', '1139', '5097', 'n', '5653', 'v']
19553

['7913', '5421']

13334