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: ['6629', 'o', 'e', '497', '4865', '8733', '5733', '7337', 'N']

Output: 33794


Input: Consider Input: ['c', 'd']

Output: 0


Input: Consider Input: ['G', 'Y', '4059', '8331', 'K', '8201', '1421', '1685', '1459', '5121', 'M', '6603', 'd', 'U']


Output: 36880