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: ['W', '3629', '6053', '1035', '1717', 'n', 'y', '9585', 'D', '5125', 's', '9801', '2905', 'E', '5797', 'T']

Answer: 45647


Question: ['P', '6161', 'k', '5925', 'h', 'G', 'n']

Answer: 12086


Question: ['N', 'j', 'p', '9989', 'z', '8547', '2575', '2789', 'j', '4569', 'C', 'X', '1463', '4563', '5989', '689', 'd', 't', '1765', '1795']

Answer:
44733