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]: ['1965', '8127', 'x', '4981', '8077', 'O', '467', '701', 'V', 'm', 'y', '5989', '123', 't', '4019', 'j', '1827', '8799']
[EX A]: 45075

[EX Q]: ['i', 'A', 'a']
[EX A]: 0

[EX Q]: ['5939', 'A', '7557', 'v', '4381']
[EX A]:
17877