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:
['5947', 'n', '9431', '7629', '7643', 'N', '141', '2353', 'l', 'F', '9665', '9489', 'X', '4905', 'H', 'L', '985']
answer:
58188


question:
['1057', '3937']
answer:
4994


question:
['8635', 'w', '3865', 'N', '7729', 'r', 'M', '5367', '8469', 'J', '757', 'p', 's', '8645', '4547', 'n', 'w']
answer:

48014