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: ['6469', '3027', 'Z', '3353', 'a', 'S', '3879', '8471', 'H', 'I', 'y', '2661', '9007', 'D']

A: 36867
****
Q: ['2683', '4431']

A: 7114
****
Q: ['o', 'D', 'G', '9703', '6353', 'h', 't', 'g', 'O', 'U', 'C', '9557', 'h', 'G', 'T', 'S', 'H', 's']

A:
25613
****