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: ['b', '5689', '119', 'p', 'P', 'J', 'w', 'm', '7397', 'Y', '447', 'O', 'p', '319', 'H', 'U']

Answer: 13971


Question: ['N', 'e', '4283', '3243', '5581', '1407', 'q', 'y', '6685', 'v', 'c', '5995']

Answer: 27194


Question: ['T', '1837', 'u', 'F', '8287', '1743', '6495', '7269', '6061', 'X', '2139', 'h', 'Q', 'J', 'r', 'R', 'u']

Answer:
33831