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', 'b', 'W', '3201', 'C', 'o', '5187', '9723', '8177', 'F', '6703', 'U', '1393', '1035', '3507', '5993', '3857', 'r', 'C', 'j']

A: 48776
****
Q: ['61', '5695', 'u', '253', 'n', '1035', 'd', '3017']

A: 10061
****
Q: ['k', 'D', '7685', 's']

A:
7685
****