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:
['R', '3361', 'c', 'S', 'g', '3829', '7347', '6633', 'e', '9227']
answer:
30397


question:
['2039', '1679', '9675', 'S', 'J', '2069', 'r', 'e']
answer:
15462


question:
['9067', '4187', '8959', '1757', 'i']
answer:

23970