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: ['9989', 'B', 'E', '5181']

Output: 15170


Input: Consider Input: ['5347', 'E', 'a', '5379', '405', '1171', 'v', 'J']

Output: 12302


Input: Consider Input: ['W', 'Y', 'W', 'j', '5041', 'T', 'd', 'c', 'Q', '733', 'P', 'P', 'N', 't', '5383']


Output: 11157