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: ['D', 'G', '9895', '143', '37', 'S', '1539', 'x', 'a', 'x', 'B', 'i', '9719', '839']

A: 22172
****
Q: ['U', 'd', '893', 'h', '9679', '315', 'H', '339', '2381', '847', '7951', 'e', '9269', '9081', 'o', '6439', 'N', '4531']

A: 51725
****
Q: ['G', 'j', 'y', '6993', 'w', 'c', 'H', '9837', 'D', '3015', 'f']

A:
19845
****