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: ['X', 'u', 'B', '269', '9089', 'M', '5175', 'K']

Answer: 14533


Question: ['h', '1157', 'm', '8975', '6165', '7491', '1855', '3489', '9629', '631', '9641']

Answer: 49033


Question: ['5853', '2037', '4071', 'G', 'L', 'e', 's', 'z', 'O']

Answer:
11961