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:
['c', 'E', 'M', '1303', 'y', 'H']
answer:
1303


question:
['3051', '5343', 'k', 'k', '6815', 'E', '4745', 'A', 'A', '1251', '6649', 'f', '4133', 'X']
answer:
31987


question:
['n', '1225', 't', 'y', 'd', 'a', 'W', 'L', 'p', '2771', '5211', '7943', '745', '1875', '7811', 'K', '9215']
answer:

36796