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:
['t', 'Q', '5189', 'g', 'c', '4685', '5309', 'W', '6729', '2843']
answer:
24755


question:
['x', 'd', '5121', 'I', '6737', '3789', '6167', 'C', '8947', 'k', '4715', '1885', 'H', 'B', '5685', 'S', '4615', 's', '7709']
answer:
55370


question:
['J', 'w', '8563', 'S', '4931', '5133', 'V', 'r', '7715', '4947', '6657']
answer:

37946