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:
['8529', '2657', '1599', 'b', '8187', '7005', '7481']
answer:
35458


question:
['q', 'N', 'y', '7859', 'u', '2861', '4151', 'Q', 'x']
answer:
14871


question:
['x', 'P', 'z', '2341', 'o', '7719', 'q', 'p', 'k', 'x', 'T', 'g', '3325', 'R', '6603', '8483', '8093', 'r']
answer:

36564