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: ['4161', 'E']

Answer: 4161


Question: ['6563', 'R', 'M', 'B', 'b', 'E', '9911', '7327', 'J', '7389', 'w', 'b', 'c', '1527', 'K', 'r', '5441', '6823', '8455']

Answer: 53436


Question: ['P', '5363', 'k', '8045', 'R', 'r', 'm', '2103', 'u', '1129', '2595', '8097', '2311', 'G', 'Z', 'E', '4649', 'y']

Answer:
34292