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: ['8147', '3191']

Answer: 11338


Question: ['E', 'X', 'C', 'v', '2803', 'g', 'b', '763']

Answer: 3566


Question: ['3365', '5889', 'q', '3383', 'q', '3569', '5213', 'Y', '2283', '6643', 'd']

Answer:
30345