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: ['M', '1589', '8353', 'X', 'P', '3173', 'V', '1335', 'm', 'l', '6421', '4823', 'r', '8941', '4255', '9107', 'z', '2449', '2321', 'l']

Answer: 52767


Question: ['d', 'c', '7251', '2923', '6115', 'n', '4673', 'm', '8145', '4637', 'G', 'k', 't', 'l', 'Q', '9305', '6053', '3595', 'o']

Answer:
52697