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]: ['U', 'd', '893', 'h', '9679', '315', 'H', '339', '2381', '847', '7951', 'e', '9269', '9081', 'o', '6439', 'N', '4531']
[A]: 51725


[Q]: ['e', '4373', 'f', 'V', 'Y', '1747', 'B', '4419', 'D', '9147', '9685', '5637']
[A]:
35008