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: ['P', '237', 'X', '8893', '7931', 'F', '8359', 'S', '6931', '6953', 'r']

A: 39304
****
Q: ['1845', '273', '6921', 'u', '165', 'n', 'y', 'I', 'u', 'X', '5503', 'L', 'G', 'V', '6223', '1123', 'v']

A: 22053
****
Q: ['e', 'A']

A:
0
****