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.

[EX Q]: ['c', '4501', 'O']
[EX A]: 4501

[EX Q]: ['k', '4991', '7289', '4355', 'I', '8415', '5175', '5329', 'G', 'a', '7193', 't', '8821', 'j', '7239', '405', 'y', 'O', '9881', 'w']
[EX A]: 69093

[EX Q]: ['d', '4805', 'B', 'h', 'q', 'B', '41', 'K', '2373', '9185', '5353', 'B', 'U', '2949', 'o', 'Q', '7943']
[EX A]:
32649