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:
['a', 'q', '4085', '6327', '6869', 'Z', 't', '7057', '1965', 'p', 'o']
answer:
26303


question:
['W', '3561', '4631', '8379', 'W', '6857', '2723', '5393', 'h', 'g', 't', 'I', 'R', '2321', 'l']
answer:
33865


question:
['3791', 'W', 'k', 'p', 'Z', 'R', 'o', 'X', '6323', 'u', 'n', '6539', '7995', '9305', 'b', '27', '8207', 'z']
answer:

42187