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: ['x', '5259', 'T', 'L', 'C', 'H', '2493', 'u', '3851', '2439', 'U']

Output: 14042


Input: Consider Input: ['N', 'O', '2635', '8891']

Output: 11526


Input: Consider Input: ['373', '2527', 'k', '3481', 'C', '7297', '6077', 'O', '5673', 'Y', '8427', '2705', '9303']


Output: 45863