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

Answer: 22053

Question: ['U', '9593', '2079', '5959', 'T', '5849', 'w', 'b', '9743', '6689', 'k', 'J']

Answer: 39912

Question: ['W', 'V', 'I', '427', '645', '8313', '6179', 'J', '3541', 'q', '9547', 'a', 'j', '4269', '5011', 'z', '2149', '5679', 'x', 'V']

Answer:
45760