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]: ['5289', '1701', '5925', '7973', 'F', 'V', 'y', '5903', 'i']
[A]: 26791


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


[Q]: ['4325', 'i', 'l', 'C', 'l', 't', 'U', '2097', '4675', 'O', 'N', 'y', '2755', 'k', '801']
[A]:
14653