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]: ['9069', '8333', 'H', '2049', '8051', 'L', '2749', '8819', '2883', '9317', 'M', '6515']
[A]: 57785


[Q]: ['z', '9173', 's', '8937', 'h', '1881', '7929', 'b', '2441']
[A]: 30361


[Q]: ['9649', '7699', '185', '731', '9085', '767', '7645', 'D', 'D', 'i', 'L', '8967', 'Q', 'D', '2219', 'v']
[A]:
46947