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.

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

Ex Output:
30507


Ex Input:
['3215', 'h', '9133', '2771', 'F', 'x', '9033', '709', 'q']

Ex Output:
24861


Ex Input:
['U', 'A', '941', '6701', '9277', 'U', 'W', 'N', '3169']

Ex Output:

20088