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: ['i', 'C', '5373', '2017', 'm', '5435', 'Y', 'h']

Output: 12825


Input: Consider Input: ['D', '5207', 'E', '119', 'g', '2991', 'G', 'g', 'u']

Output: 8317


Input: Consider Input: ['Z', '5297', '83', '7725', '8861', 'Q', 'w', '1385', 'u', '6455', 'S', '7359', '6311', '3849', 'L', '3879', '3775', '9757', 'u', '8309']


Output: 73045