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:
['2469', 'c', '6931', 'a', '2167', '9493', '9403', '4123', '4949', 'R', 'V', 'h', '315', 'T', '9411', 'M', '1329', '8217', '6105', 'Y']
answer:
64912


question:
['K', 'p', '97', 'R', '2999', 'u', '7307', '6033', '6431', 'm', 'T']
answer:
22867


question:
['5551', 'f', '4937', 'z', 'X', '7945', 'I', 'u', '643', '4507', '3995', 's', 'a', '3935', 'T', '6173', '3561', '1427', '5567']
answer:

48241