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.

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


[Q]: ['3107', 'D', '9595', '8807', 'Q', 'o', 'T', 'N', 'A']
[A]: 21509


[Q]: ['J', 'Y', '6549', '9301', '8769', '4295', '5935', 'E', 'C', '1771', '4313', 'u', '8683', '9211', 'P', 'k', '7709', 'X']
[A]:
66536