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.

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

A: 15421
****
Q: ['2469', 'c', '6931', 'a', '2167', '9493', '9403', '4123', '4949', 'R', 'V', 'h', '315', 'T', '9411', 'M', '1329', '8217', '6105', 'Y']

A: 64912
****
Q: ['8025', '1029', '5021', 'p', 'i', '9011', '4715', '9997', '4781', 'N', 'U', '367']

A:
42946
****