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]: ['V', 'O', '1309', 'm', '9333', '8283', 'Z', 'K', 'X', 'w', '9855', '9075', '2013', '8485', '9973', '8779']
[EX A]: 67105

[EX Q]: ['N', 'e', '4283', '3243', '5581', '1407', 'q', 'y', '6685', 'v', 'c', '5995']
[EX A]: 27194

[EX Q]: ['t', 'u', '1271', '8035', 'L', 'l', 'Z']
[EX A]:
9306