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: ['8667', '4129', '7075', '6345', '1315', 'M', 'F', '9073']

Output: 36604


Input: Consider Input: ['9211', '1889', '7371', '9649', 'b', 'y', 'q', 'a', 'i', '1137', '3291', '8625']

Output: 41173


Input: Consider Input: ['Q', 'O', 'D', 'c', 'L', '2597', 'X', '6009', '9513', '9957', '7337', '9343']


Output: 44756