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:
['7187', '5651', 'd', '4869', 'q', '2375', '3547']
answer:
23629


question:
['4685', 'q', 'O', 'o', '3453', 'o', 'Y', 'C', 'a', 'i', '7283', 'J', 'n', 'Q', 'i']
answer:
15421


question:
['8461', 'p']
answer:

8461