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: ['7277', 'c', '9587', '2613', '853', 'w', 'y', '4067', 'o', 'u', 'j', 'W', '1517', 'x', 'Y']

A: 25914
****
Q: ['187', 'J', 'l', 'p', '1009', 'g', '5817', 'V', 'B', 'Z', '3329', '9253']

A: 19595
****
Q: ['q', 'G', '4209', 'o', 'G', 'w', '8497', '6961', '7489', 'V', 'a', '4683', 'G']

A:
31839
****