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: ['6941', 'I', 'j', '6135', '6525', '7853', '5607']

Output: 33061


Input: Consider Input: ['o', '7099', 'G', 'v', 'H', 'J', 'k', '1607', 'i', '9765', '2489', '8031']

Output: 28991


Input: Consider Input: ['1385', 'g', 'C']


Output: 1385