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:
['8667', '4129', '7075', '6345', '1315', 'M', 'F', '9073']
answer:
36604


question:
['z', '3199', 'r', '849', 'C', 'v', '1931', 'M', 'Q', '4531', '579', 'x', '8997', '4663']
answer:
24749


question:
['445', 'A', 't', '5037', 'N', 'V', 'O', 'd']
answer:

5482