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: ['6293', 'o']

Output: 6293


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

Output: 28991


Input: Consider Input: ['s', 'Y', '73', 'J', '6327', 'W', 'Y', 'r', 'I', 'r', '8365', 'Y', '5117', '1029']


Output: 20911