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:
['m', 'e', 'W', 'N', '4459', '693', '3765', '2641']
answer:
11558


question:
['83', 'k', 'p', 'o', 'b', '7819', '2089', '4141', 'c', 's', '6045', '6783', 'J', 'B', 'x', 'O', 'X', '9693']
answer:
36653


question:
['b', '7297', '3377', '9429', '4891', 't', '3121', 'x', '4379', '5425', 'x', 'k', '7579', 'k', '307']
answer:

45805