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: ['6051', '5303', '1509', '2797', 'Z', '4777', '721', '8563', 'K', '63', '9115', 'd', '7305', '9743', '7409']

Output: 63356

Input: Consider Input: ['2923', '3573', '6179', '7673', '6551', 'B', '315', '5169', 'm', '9405', 'm', 'Z']

Output: 41788

Input: Consider Input: ['8795', 't', '9399', '7511', '3177', '8561', 'C', '3809', 'W', 'c', '6083', '563', 'e']
Output: 47898