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]: ['2225', '1925']
[EX A]: 4150

[EX Q]: ['7465', 'G', '105', 'A', '3987', 'O', '7385', 'C', '8957']
[EX A]: 27899

[EX Q]: ['6081', '7375', 'S', '1151', 'P', 'e', '8851', 'G', '1955', '2523']
[EX A]:
27936