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:
['s', '425', '6135']
answer:
6560


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


question:
['1779', 'B', 'P', 'x', 'E', '6553', '7891']
answer:

16223