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: ['3051', '5343', 'k', 'k', '6815', 'E', '4745', 'A', 'A', '1251', '6649', 'f', '4133', 'X']

Output: 31987


Input: Consider Input: ['l', '2511', '2071', 'o', 'F', '7583', '1909', '1859', '3299', '3853', 'h', 'P', 'P', '9175', 'B', 'F']

Output: 32260


Input: Consider Input: ['3033', 'H']


Output: 3033