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]: ['5215', 'c', '839', 'V']
[A]: 6054


[Q]: ['8591', 'J', 'l', 'l', '7023', 'N', 'n']
[A]: 15614


[Q]: ['5111', '8459', '7597', 'a', 'T', '7631', 'Z', '9455', 'I', 'W']
[A]:
38253