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: ['C', 'v', '1353', 'e', 'x', 'A', 'D', '1243', '477', 'z', '3483', '5213', 'k', 'm', 'n']

Output: 11769


Input: Consider Input: ['3877', '2685', 'f', 'r', 'q', 'o', 'k', 'i', '2299', '9075', 'X', '4303', '7379', '9205', 'V', '9655', 's']

Output: 48478


Input: Consider Input: ['z', '2915', '3599', '7313', '6679', '3005', '3221', 'W', 'e', 'S', 's', '493', 'J', '3633', 'I', '7973', 'c']


Output: 38831