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.

['3723', 'v', 'j', 'e', '2017', 'd', '4211', '2079']
12030

['4145', 't']
4145

['q', '2477', '4091', 'O', 'g', 'N', '2519', '7771', '8363', 'A', 'r', 's', 'F', '9075']

34296