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]: ['g', '5301']
[A]: 5301


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


[Q]: ['2585', 'u', '8657', '1857', '9995']
[A]:
23094