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]: ['b', '5689', '119', 'p', 'P', 'J', 'w', 'm', '7397', 'Y', '447', 'O', 'p', '319', 'H', 'U']
[EX A]: 13971

[EX Q]: ['R', '3361', 'c', 'S', 'g', '3829', '7347', '6633', 'e', '9227']
[EX A]: 30397

[EX Q]: ['6845', '8011', '9235', 'P', 'Q', '1249', '7941', '9727', 's', 'v', 'H', '8597', '2443', 'b', 'L', '1545', 'p']
[EX A]:
55593