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:
['u', 'W', '1561', '9243', '4923', '9385']
answer:
25112


question:
['z', '3199', 'r', '849', 'C', 'v', '1931', 'M', 'Q', '4531', '579', 'x', '8997', '4663']
answer:
24749


question:
['d', 'U', '585', 'H', 'D', '1629', '7879', '2669', 'D']
answer:

12762