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: ['q', '6631', 'b', '4207', '7523', '9853', '9203', 'P', '5029', 'b', '2319', '4717', '2485']

Answer: 51967


Question: ['1867', '5301', 'x', '3867', '8707', '2429', 'K', '59', '6629', 'v', 'A', 'y', 'P', '3829', '1979', 'R', '8481', '5767', 'h', 'U']

Answer: 48915


Question: ['h', 'u', '5039', '2577', '9165', 'E', 'I', 'o', '3855', 'R', '3261', 'T', 'E', '589', '1355']

Answer:
25841