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.
--------
Question: ['w', 'V', '3359', '8847', '7551', '2481', 'Y', 'j', 'L', 'G', '7905', 'v', '4141', '2229', 'k', 'H', '3517', '3885', '3665', 'O']

Answer: 47580


Question: ['V', '8137', 'b', 'k', '2081', 'L', '9733', '7525', 'D', '2381', 'O']

Answer: 29857


Question: ['Y', 'd', 'k', '7375', '6257', 'c', 'Q', '9859', '7743', '4417', 'B', 'I', 'z', '2045', 'g', 'r']

Answer:
37696