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


question:
['7361', '6913', '3605', '2081', '7619']
answer:
27579


question:
['x', '3195', 'a', 'k', 'u', '2661', '8185', 'e', 'X']
answer:

14041