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

A: 51725
****
Q: ['D', '1611', 'w', '8825', '8987', '3021', '9019', 's', '87', '9283', '5717', 'f', '1503', '6593', '8533', '785', 'g']

A: 63964
****
Q: ['5385', 'o', 'V', '7033', '8173', 'S', 'V', 'j', 'T', 'B', 'U']

A:
20591
****