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: ['o', 'L', 'E', 'V', 'D', 's', 'Z', 'm', 'a', '2785', 'I', 'v', 'B', '7909', '1599', 'V', 'N']

Answer: 12293


Question: ['J', '5149', 'H', 'L', 'm', 'h', '3863', 'n', 'z']

Answer: 9012


Question: ['q', 'I', 'N', 'I', 'n', 'O', '4051', 'v', 'b', '1659', 't', 'u', 'D', 'z', 'J']

Answer:
5710