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]: ['i', 'A', 'a']
[A]: 0


[Q]: ['6577', 'Q', '6865', '7671', 'N']
[A]: 21113


[Q]: ['Z', 'H', '6127', '6389', 'g', '4087', '8819', '7633', '3095', '4211', 'r', '9233']
[A]:
49594