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: ['V', '8137', 'b', 'k', '2081', 'L', '9733', '7525', 'D', '2381', 'O']

Answer: 29857


Question: ['457', '173', '6807', 'o', '555', 'l', 's', 'Z', 'm', '3035', '1283', '5645', 'S', '8641', 'J', 'Z', 'z', 'K']

Answer: 26596


Question: ['5477', '1035', 'E', '2647', 'V', 'W', '4309', '2409', 'y', '1981', '6909', '9201', '4205', 'D', '8007', '3683', '7915', '1719']

Answer:
59497