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.

[EX Q]: ['O', 'K', 's', 'V', '6815', 'c', '9277', 'V', '1783', 'b', 'i', '2045', 'E', 'E', '2035']
[EX A]: 21955

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

[EX Q]: ['4121', 'A', 'e', '1629', 'l', '3269', '551', 'V', '4685', '9251']
[EX A]:
23506