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: ['M', '9387', '7125', 'c', '1295', 'X', 'l', '9867']

Output: 27674


Input: Consider Input: ['4685', 'q', 'O', 'o', '3453', 'o', 'Y', 'C', 'a', 'i', '7283', 'J', 'n', 'Q', 'i']

Output: 15421


Input: Consider Input: ['8167', 'f', '1209', '5377', '4489', 'S', 'q']


Output: 19242