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: ['t', 'v', 'B', 'Y']

Answer: 0


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

Answer: 39912


Question: ['i', 'A', '7757', 'z', '803', 'T', '6165', '8613', 'V', '9465', '9983', '2955', '1569', '7675']

Answer:
54985