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: ['1869', 'q', '5919', 'D', '7733', '2641', 'h', '1327']

Answer: 19489


Question: ['Q', '9787', '7533', '9489', 'C', '1753', '5121', '1405', '9267', '4815', 's', '5887']

Answer: 55057


Question: ['X', '9771', 'o', 'S', '1421', '4703', '3729', '1555', 'R']

Answer:
21179