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: ['P', '6161', 'k', '5925', 'h', 'G', 'n']

A: 12086
****
Q: ['h', '9539', '3373']

A: 12912
****
Q: ['B', 's', 'q', 'm', '429', '8511', 'Y', '1977', 'E', '1361', '9565', '8195', 'u']

A:
30038
****