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: ['x', '1887', 'E', '3995', '5677', '2749', '9951']

Output: 24259


Input: Consider Input: ['B', '9189', '3691', '2869', '1525', 'd', 'H', 'P', '8613', 'b', 'r', '5289', 'V', '6433', '8733', 'K', '8105', '1041', 'U', 'L']

Output: 55488


Input: Consider Input: ['M', 'V', 'Q', 'E', 'q', '8775', 'K', '1205', 'M', 'W', '8369', '2929']


Output: 21278