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:
['K', 'O', 'p', '1669', '8647', '3417', 'a', '8903', 'V', 'E', 'l', 'a', '5177', 'J', '6559', '5377', 'X', '9427']
answer:
49176


question:
['5289', '1701', '5925', '7973', 'F', 'V', 'y', '5903', 'i']
answer:
26791


question:
['c', 'b', 'L', '5501', 'j', 'B', 'f', '5147', '6003']
answer:

16651