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: ['3723', 'v', 'j', 'e', '2017', 'd', '4211', '2079']

Answer: 12030


Question: ['2585', '3043', 'w', '7697', '53', 't', 'A']

Answer: 13378


Question: ['l', '4185', '5675', 'D', 'E', '9269', '219', '4429', '3661', '5353']

Answer:
32791