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]: ['6629', 'o', 'e', '497', '4865', '8733', '5733', '7337', 'N']
[A]: 33794


[Q]: ['q', 'I', 'E', 'M', 'T', 'i', '8719', 'r', 'V', '9759', 'I', '1793', 'Q', 'P', '5263', 'I', 'O', '8603', 'y']
[A]: 34137


[Q]: ['1603', '2843', 'U', '1045', 'y', '9499', 'c', 'B', '9055', 'R', '7525', '1383', 'b']
[A]:
32953