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]: ['z', '9173', 's', '8937', 'h', '1881', '7929', 'b', '2441']
[EX A]: 30361

[EX Q]: ['S', '1249', '6233', 'I', '6733', 'r', 'A', 'E', 'h', 'x', 'p', 'c', '515', '1029', '1593', '1035']
[EX A]: 18387

[EX Q]: ['V', 'A', '3907', '7411', 'r', 'V', '3105', 'o', 's', 'L', '5295', '589', 'j', '9863']
[EX A]:
30170