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:
['Q', '9787', '7533', '9489', 'C', '1753', '5121', '1405', '9267', '4815', 's', '5887']
answer:
55057


question:
['3565', 'z', '8811', 'z', 'U', '113', 'I', '1307', '135', 'V', 'P', '5183', '2505', '4863', '1113', 'A', '7575', '827', 'B']
answer:
35997


question:
['q', '529', '5035', '7791', 'w', '7417', 'J', '2361', '6097', 'F', 'f', '2919', '9781', 'o']
answer:

41930