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:
['7763', '6003', 'V']
answer:
13766


question:
['C', 'v', '1353', 'e', 'x', 'A', 'D', '1243', '477', 'z', '3483', '5213', 'k', 'm', 'n']
answer:
11769


question:
['Z', '5191', 'c', 'j', 'C', '3295', 'T', '7175', 'E', '1657']
answer:

17318