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]: ['4401', 'p', 'V', 'l', 'H', '7329', 's', '4717', 'l', '1773', '67', '179', 'l', '6991', 'a', '9377']
[A]: 34834


[Q]: ['1391', '1719', '8547', 'x', 'a', 'j', '6395', 't', '3421', '6607', 'M', '1645', 'H', 'x', 't']
[A]: 29725


[Q]: ['2977', 'C', 'N', '3111', '177', '8805', '3699', '8123', 'g']
[A]:
26892