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:
['g', '5301']
answer:
5301


question:
['3071', '355', 'e', '9781', 'R', '6833', 's', '2665', 'L', '9551', 'P', '6101', '2955', '4643', 'O', '3327', '2163', '685', '4277', 'B']
answer:
56407


question:
['P', '4317', 'R', '2391', 'V', 'h', '3965', '5629', '955', '7479']
answer:

24736