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]: ['9211', '1889', '7371', '9649', 'b', 'y', 'q', 'a', 'i', '1137', '3291', '8625']
[A]: 41173


[Q]: ['A', '9775', '5867', 'n', '1329', '5973']
[A]: 22944


[Q]: ['N', 'C', 'g', '2983', '9651', 'v', 'J', 'm', '7921', '1089', 'Q', 'F', 'l']
[A]:
21644