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:
['D', 'P', 'y', '4891', '1539', 'J', '5737']
answer:
12167


question:
['y', 'R', 'b', 'v', 'm', 'H', '9903', '8689', 'D', '1023', 'a', '233', '1833', 'o', 'n', 'm', '5531']
answer:
27212


question:
['s', '335', 's', 'f', '175', '4799', '8301', '3553', 'O', '6175', 'd', '9549']
answer:

32887