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]: ['c', 'E', 'M', '1303', 'y', 'H']
[A]: 1303


[Q]: ['6957', '4603', '5299', '8451', '9803', 'b']
[A]: 35113


[Q]: ['7935', '5857', '4407', '411', '1451', 'E', '8147', 'h', 'a', '2705', '9411', '8381', 'n']
[A]:
48705