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:
['l', '2511', '2071', 'o', 'F', '7583', '1909', '1859', '3299', '3853', 'h', 'P', 'P', '9175', 'B', 'F']
answer:
32260


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


question:
['y', '7691', 'f', 'g', 'd', '4101', '6291', 'K', '1545', '2121', '7911', '9145', 's', 'P', 'M', 'V', '4333', '9171']
answer:

52309