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: ['1493', 'x', 'h', '31', '3327', '1621', '4529', 'd', '377', 'R', 'X', 'Z', 'G']

Answer: 11378


Question: ['l', '2511', '2071', 'o', 'F', '7583', '1909', '1859', '3299', '3853', 'h', 'P', 'P', '9175', 'B', 'F']

Answer: 32260


Question: ['1911', '5181', '4519', '4427', '8407', '7583', '9797', '5893', 'e', 'D', '9257']

Answer:
56975