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: ['6515', '5525', 'o', 'Q', '9049', 'f', 'p', 'X', '2057', 'h', '7585', '3617', '7817']

Answer: 42165


Question: ['8755', 'A', '2893', '6703']

Answer: 18351


Question: ['3833', 'Z', 'U', '4213', '5899', '261', 'Z', '4065', '3029', '183', '687', 'G', 'J', 'f', '1675', '8595', 'U']

Answer:
32440