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:
['o', '7099', 'G', 'v', 'H', 'J', 'k', '1607', 'i', '9765', '2489', '8031']
answer:
28991


question:
['i', 'I', '6167', '4729', '4039', 'R', 'n', '4533', 'U', 'f', '4739', 'I', '521', '6109', 'Q', 'r', '2483', 'c', '3459']
answer:

36779