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]: ['7293', '2619', '2459', '3829', 'J', 'c', 'a', 'a', '311', 'x', 'r', '6123', '2847', '4809']
[A]: 30290


[Q]: ['4241', 'E', '1807', '2877', '5125', '7625', 'S', '401', '5081', 'u', 'R', 'F']
[A]: 27157


[Q]: ['1613', '1433', '9785', '7599', 'F', '4831', 'I', '3503', 'S', 'U', '5725', '6385', 'j', 'A']
[A]:
40874