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: ['8207', '4791', '3925', 'b', 'Z', '8471', '9215', '3117', 'p', '9095', 'h', 'k', 'E', 'h', '6047']

Output: 52868


Input: Consider Input: ['6957', '4603', '5299', '8451', '9803', 'b']

Output: 35113


Input: Consider Input: ['5263', '6371', '2077', '9995', '2015']


Output: 25721