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: ['1305', '1673', 'w']

Answer: 2978


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

Answer: 15421


Question: ['K', '3187', 'h', 'o', 'h', '5249', 'i', 'L', 'p', '3819', '3837', '8091', 's', '8921', 'C', '7673']

Answer:
40777