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:
['q', 'N', 'y', '7859', 'u', '2861', '4151', 'Q', 'x']
answer:
14871


question:
['b', 'W', 'V', 'R', '3761', 'U', '4553', '1803', 'W', '7775', '1067', 'Y', 'D', '3159']
answer:
22118


question:
['u', '9595', 'y', '7015']
answer:

16610