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 Input:
['b', 'O', '7023', 'q', '2667', '681', 'C', '5707', '7125', 'q', 'Q', '1375', '8869', '6709']

Ex Output:
40156


Ex Input:
['A', '9775', '5867', 'n', '1329', '5973']

Ex Output:
22944


Ex Input:
['6059', 'I', '769', '5211', '6041', '8173', 'd', '5387', 'l']

Ex Output:

31640