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:
['i', 'C', '5373', '2017', 'm', '5435', 'Y', 'h']
answer:
12825


question:
['6941', 'I', 'j', '6135', '6525', '7853', '5607']
answer:
33061


question:
['6051', '5303', '1509', '2797', 'Z', '4777', '721', '8563', 'K', '63', '9115', 'd', '7305', '9743', '7409']
answer:

63356