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:
['w', '7301', '9411', 'z', 'g', 'X', '1045', 'l', 'F', 'M', 'R', '7957', 'e', '5145']
answer:
30859


question:
['5347', 'E', 'a', '5379', '405', '1171', 'v', 'J']
answer:
12302


question:
['9239', 'D', 'm', '4153', 'b', 'X', '4439', '879', '6873']
answer:

25583