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: ['b', '5689', '119', 'p', 'P', 'J', 'w', 'm', '7397', 'Y', '447', 'O', 'p', '319', 'H', 'U']

Output: 13971


Input: Consider Input: ['k', 'a']

Output: 0


Input: Consider Input: ['p', 'E', '4893', 'r', '8611', '617', 'z']


Output: 14121