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.

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

Output: 27194


Input: Consider Input: ['w', 'I', 't', '813', 'K', '5785']

Output: 6598


Input: Consider Input: ['l', 'k', 'V', '3679', '6919', 'F', 'c', '5521', '8823', '3861', 'X', '4303', '2613']


Output: 35719