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

Output: 30507


Input: Consider Input: ['n', 'm', 'Y', 'v']

Output: 0


Input: Consider Input: ['39', '3059', '2925', 'i', 'I', '7935', '4777', '3341', '5759', 'q', '9935', 'x', '6979', 't', '7439', '8569', '7973', '2421', 'Y']


Output: 71151