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: ['2151', '7511']

Output: 9662


Input: Consider Input: ['5899', '229', 'm', '3347', 'k', 'q', 'g', '2755', '8727', '2035', '823', '6835', '9271', 'Q']

Output: 39921


Input: Consider Input: ['6857', 'O', '3755', '7709', '4221', 'A', '8413', 'Q', '7171', 'W', 'q', 'p', '3905']


Output: 42031