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:
['s', 'd', 't', '8235', '2279', '7477', '3029', '4377', '9153', '4309', '2295', '407']
answer:
41561


question:
['2013', 'S', 's', '9353', 'b', 'u', '6687', '5429', '3545', '7269']
answer:
34296


question:
['3635', '7379', 'f', 'h', 'A', '1435', 'F', 'e', '3581']
answer:

16030