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

Answer: 67105


Question: ['4201', '6445', '4009', 'q']

Answer: 14655


Question: ['3151', '9807', 'K', 'O']

Answer:
12958