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]: ['3121', 'j']
[A]: 3121


[Q]: ['3655', '1349', '6519', '1019', 'v', '4811', '8609', '9147', '8225', '2665', '2627', '5839']
[A]: 54465


[Q]: ['9479', '3281', 'N', '3213', '1071', '5053', 'R', 'R', 'B', 'N', 'j', 'w']
[A]:
22097