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: ['4529', '7465', 'S', 'Z', 'v', 'w', '5791', '3363', '2643']

Output: 23791


Input: Consider Input: ['J', '177', '8449', '2067', 'a', 'G', 'p', 'd', '5161', 'M', '2403', '5541', 'q', '4375', 'O']

Output: 28173


Input: Consider Input: ['j', '3921', 'T', 'y', '351', 'N', 'u', 'p']


Output: 4272


