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: ['X', 'P', 'x', '9471', '5', 'c', 'f', '5077', '1085', '2267', 'R', 'q', '4987', '9529', 'H', 'n', 'r', 'u']

A: 32421
****
Q: ['x', 'd', '5121', 'I', '6737', '3789', '6167', 'C', '8947', 'k', '4715', '1885', 'H', 'B', '5685', 'S', '4615', 's', '7709']

A: 55370
****
Q: ['I', 'Q']

A:
0
****