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: ['2325', '3259', '1947', '8065', 'H', '2329', 'h', 'l', 'k', 'R']

Answer: 17925


Question: ['4685', 'q', 'O', 'o', '3453', 'o', 'Y', 'C', 'a', 'i', '7283', 'J', 'n', 'Q', 'i']

Answer: 15421


Question: ['9453', '7687', 'b', 'E', '8991', '6729', 'k', 'E', '3401']

Answer:
36261