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:
['4145', 't']
answer:
4145


question:
['4201', '6445', '4009', 'q']
answer:
14655


question:
['9045', 'F', 'E', '9171', '6763', 'C', '7353', 'r']
answer:

32332