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: ['o', 'a', 'K', '6031']

A: 6031
****
Q: ['J', '177', '8449', '2067', 'a', 'G', 'p', 'd', '5161', 'M', '2403', '5541', 'q', '4375', 'O']

A: 28173
****
Q: ['6511', '2445', '6523', '7445', 'M', '2691', 'H', 'E', '7547', 'i']

A:
33162
****