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', 'V', 't', 'X', 't', 'M']

Output: 0


Input: Consider Input: ['2237', '2597', '2593', 'Y', '5345', 'g', 'l', 'I', 'p', 'u', 'L', 'T', '617', '9759', 'b', 'w', '7097', '9863']

Output: 40108


Input: Consider Input: ['1241', 'F', '8783', '265', '9365', 'G', '9089', '1823', '5669', 'E', 'N', 'f']


Output: 36235