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]: ['b', 'i', '7807', 'g', '1611', '6733', 'V', '561', 'C', '8575', 's', 'E', '8129', 'F']
[EX A]: 33416

[EX Q]: ['4463', '489']
[EX A]: 4952

[EX Q]: ['n', 'W', 'd', 'r', 'q', '7731', 'O', 'm', '6611', 'R']
[EX A]:
14342