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:
['4529', '7465', 'S', 'Z', 'v', 'w', '5791', '3363', '2643']
answer:
23791


question:
['1057', '3937']
answer:
4994


question:
['9141', 't', '8577', 'H', 't', 'T', 'p', '2337', '83', 'Q', '3581', 'r', '5095']
answer:

28814