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:
['1869', 'q', '5919', 'D', '7733', '2641', 'h', '1327']
answer:
19489


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


question:
['k', '6415']
answer:

6415