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]: ['6001', '6423', '5591', '8721', 't', 'x', '3723', 'E', 'F', '7353', 'b']
[EX A]: 37812

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

[EX Q]: ['N', '9943', 'D', '5005', 'G', '6031', 'u', '3287', 'k', 'E', '1091', '387', 'h', 'J', '4677', '9847', 'P', 'I']
[EX A]:
40268