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]: ['129', '8667', 'E', '2919', 'e', 'Y', 'h', 'm', '501', '5911', 'q', '4955', 'D', '1369', 'W']
[A]: 24451


[Q]: ['D', 'm', 'P', '2433', '6731']
[A]: 9164


[Q]: ['453', 'L', '9161', '947', '3383', 'R', 'N', 'K', '5033', 'K', '2119', 'o', 'p', 'J', 's', 'I', 'e', 'a', '1213']
[A]:
22309