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:
['6629', 'o', 'e', '497', '4865', '8733', '5733', '7337', 'N']
answer:
33794

question:
['433', 'y', '2015', '5997', 'X', 'u', '9321', '8037', 'N', 'Z', 'E', '4645', '627', '6595', '7679']
answer:
45349

question:
['313', '8229']
answer:
8542