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: ['1867', '5301', 'x', '3867', '8707', '2429', 'K', '59', '6629', 'v', 'A', 'y', 'P', '3829', '1979', 'R', '8481', '5767', 'h', 'U']

Answer: 48915

Question: ['V', 'O', '1309', 'm', '9333', '8283', 'Z', 'K', 'X', 'w', '9855', '9075', '2013', '8485', '9973', '8779']

Answer: 67105

Question: ['9861', '9177', 'x', '6991', 'Z', '1715', 'p', '765', '2711', 'i', '1801', 'H', '5803', 'd', 'm']

Answer:
38824