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

['6907', '9123', 'L', '8871', 'q', 'C', 'U', '7403', 'F', '3827', '3951', '8879', '2865', 'x', '6175', 'T', '1147']
59148

['q', '9307']

9307