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:
['8743', 'Y', 'O', '8265', '1029', '5689', 'F', 'j', 'Z', 'i', 'S', '1285', '737']
answer:
25748


question:
['U', '5607', 'Q', 'j', 'I', '3745', '3031']
answer:
12383


question:
['M', 'F', '4477', '1565', '4407', 'r', 'v', '7237', '83', '5243', 'O', 'z', 'W', '7703', 'Q', 'i', '9657', 'n']
answer:

40372