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: ['4159', 'H', 'h', 'W', 'w', 'i', 'G', 'l', 'j', '5467', '9219', 'j', 'q', 'n', '5465', '6197', 'J', 'y']

Output: 30507


Input: Consider Input: ['1409', 'm', 'O', '455', 'Y', 'R', '3531', 'y', '8941', 'N']


Output: 14336