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: ['M', 'H', 'l', 'Y', '3811', '1953', '5869', 'U']

Output: 11633


Input: Consider Input: ['8591', 'J', 'l', 'l', '7023', 'N', 'n']

Output: 15614


Input: Consider Input: ['f', 'm', '4769', '6963', 'Z', '119', 'w', '7703', '6737', '597', 'B', '1149']


Output: 28037