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.

['6161', 'p', '2839', 'c', '5905', '1729', 'j', '5901', '3013', 'e']
25548

['o', '8089', '2159', '943', '1255', 'w', 'Y', '3723', 'n', '7767', '2209', 'F', 'c', 'J', '5259', '4427', 'n', 'U']
35831

['Y', 'a']

0