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

['6347', '5495', '169', '9503', 'H', '571', '6105', 'X', 'r', 'e', '7369', 'a', 'd', '6999']
42558

['h', 'P', 'U', '8129', 'O', '6349', 'W', '873', '7093', '9609']

32053