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


[Q]: ['D', '7807', '9395', 'T', 'c', '5139', '2827', 't', 'T', 'm', '3717', 'U', '3225', '7419', '2481', 'p', 'C', '5277']
[A]: 47287


[Q]: ['1149', '6329', 'P', 'M', 'H', '8905', '9669', '1903', '6399', '5707', 'n', '6119', '8403', '943', 'i', 'o', '129', '4925', '7129', 't']
[A]:
67709