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: ['g', 'A', 'm', '4005', '8079', 'G']

Answer: 12084


Question: ['n', 'u', '9595', 'M', 'o', 'K', '5073', 'x']

Answer: 14668


Question: ['3307', 'y', '6813', 'E', '551', 'S', 'm', '6347', 'y', 'b', 'a', '469', '6799', '1765', 'M', '2997', '1685', '2513', '6507', '8793']

Answer:
48546