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]: ['k', 'a']
[EX A]: 0

[EX Q]: ['l', 'V']
[EX A]: 0

[EX Q]: ['9853', '5153', 'A', '1535', 'U', '8975', '6477', 'M', 'I', '4941']
[EX A]:
36934