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: ['C', '3133', '2183', '5793', '9305', 'd', 'g', '6501']

Output: 26915


Input: Consider Input: ['W', 'c', '7971', 'J', 'o']

Output: 7971


Input: Consider Input: ['b', '9993', 'h']


Output: 9993