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:
['6367', '9923', '9141']
answer:
25431


question:
['X', 'u', 'B', '269', '9089', 'M', '5175', 'K']
answer:
14533


question:
['5217', '3463', '8001', '7571', '5735', 'K']
answer:

29987