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: ['7277', 'c', '9587', '2613', '853', 'w', 'y', '4067', 'o', 'u', 'j', 'W', '1517', 'x', 'Y']

Output: 25914


Input: Consider Input: ['9905', 'm', 'Q', 'S', 'T', '7821', '1773', '9515', '3963', '2931', '7023', '8677', '1739', 'O', '909', '9153', '8319', 'k', '2851']

Output: 74579


Input: Consider Input: ['O', 'E', 'E', '4071', 'V', 'X', 'g', 'I', '4677', 'Y', 'N', '3711', 'O', '969', '2747', 'Y', 'j', 'v', '6251', 'V']


Output: 22426