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]: ['O', 'K', 's', 'V', '6815', 'c', '9277', 'V', '1783', 'b', 'i', '2045', 'E', 'E', '2035']
[EX A]: 21955

[EX Q]: ['G', 'o', 'g', 'I', 'S', '9193', 'G', 'C', '2481', '435', 'm', '1005', '5605', '6501', 'D']
[EX A]: 25220

[EX Q]: ['o', '9355', '1577', '8587', '2629', 'i', 'Y', 'D', '3803', '5939', 'B', '3757', '757', '4143', 'o', '3545']
[EX A]:
44092