instruction:
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.
question:
['v', 'Y', '4135', '8645', '263', '5377', '8677', 'Z', 'W', 'g', 'n', 'r', 's', '8513', '5677', 'u', '3033', 'I']
answer:
44320


question:
['U', '5885', 'u', 'Y', 's', 'w', 'j', '9629', '9505', 'U']
answer:
25019


question:
['5193', 'F', '6393', '8859', '2525', '1827']
answer:

24797