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

A: 22053
****
Q: ['3331', '5791', 'r', 'Q', '2243', '8229']

A: 19594
****
Q: ['u', 'H', '8621', '1145', 'D', '1007', 'w', 'a', '1201', '8779', '5513', 'N', '9695', '3869', '4515', 'U']

A:
44345
****