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: ['h', '2295', '2913', 'I', '5273', 'L', '2739', '8227', '6537', 'e', '6491', '5463', 'i', '4337', '537']

Answer: 44812


Question: ['4463', '489']

Answer: 4952


Question: ['T', '8071', 'U', '6339', 'l', '31', '2427', 'B', 'e', 'a', 'f', 'w']

Answer:
16868