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:
['1073', 'i', 'o', 'j', 'O', 'g', 'X', '3261', '5105', '4831', 'J']

Ex Output:
14270


Ex Input:
['N', 'e', '4283', '3243', '5581', '1407', 'q', 'y', '6685', 'v', 'c', '5995']

Ex Output:
27194


Ex Input:
['3745', 'w', '1835', '8139', 'U', 't', '451']

Ex Output:

14170