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: ['e', '9777', '1835', 'N', '2425', '1427', 'o', '4459', '9961', '3285', '5199', 'x', 'e', '7727']

A: 46095
****
Q: ['F', 'z', '1159', '345']

A: 1504
****
Q: ['D', '8467']

A:
8467
****