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.

Input: Consider Input: ['2325', '3259', '1947', '8065', 'H', '2329', 'h', 'l', 'k', 'R']

Output: 17925


Input: Consider Input: ['4685', 'q', 'O', 'o', '3453', 'o', 'Y', 'C', 'a', 'i', '7283', 'J', 'n', 'Q', 'i']

Output: 15421


Input: Consider Input: ['3381', '1261', '5717', '5933', '7155', '1831', '8299', 't', 'O', '3611', 'F', '1025', 'D', '9685', '5483', 'Q', 'y', '7597']


Output: 60978