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]: ['s', 't', 'W', '163', 'v']
[A]: 163


[Q]: ['l', 'V']
[A]: 0


[Q]: ['8131', '2671', 'm', 'o', 'g', '8333', 'G']
[A]:
19135