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]: ['4529', '7465', 'S', 'Z', 'v', 'w', '5791', '3363', '2643']
[A]: 23791


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


[Q]: ['3061', 'B', '7999', 'K', 'B', '3323', '4265', 'r', '225', '6153', 'r', '7371', '7541', 'G', 'J', 'N', '7607']
[A]:
47545