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: ['5947', 'n', '9431', '7629', '7643', 'N', '141', '2353', 'l', 'F', '9665', '9489', 'X', '4905', 'H', 'L', '985']

Answer: 58188


Question: ['6941', 'I', 'j', '6135', '6525', '7853', '5607']

Answer: 33061


Question: ['I', '4463', 'p', '6043', 'e', '5859', 't', '3285', 'Z', 'R', 'g', '6613', 'q', '3059', '6907', 'a']

Answer:
36229