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:
['O', 'K', 's', 'V', '6815', 'c', '9277', 'V', '1783', 'b', 'i', '2045', 'E', 'E', '2035']
answer:
21955


question:
['W', 'O', 'c', 'r', 'E', 'w', '9811', '6421', '3543', '4293', '8255', 't', '229', '745', 'w', 'p', '6861', '5305', 'h']
answer:
45463


question:
['h', 'g', 'C', 'x', 's', '3797', 'S', '6445', 'E', '3879', '1939', '4615', 'E', 'v']
answer:

20675