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.

Ex Input:
['8361', '6757', '5341', '2597', '9803', 'a', 'd', '5889', '9823', 'd', '7947', 'y', 'p']

Ex Output:
56518


Ex Input:
['5021', 'q', '4109', 'g', 'w', 'C', 'w', '239', 'N', '9755', '8591', '7083', 'Q', '7907', 'w', 'U', 'a', '4901', 'k', 'G']

Ex Output:
47606


Ex Input:
['4539', 'W', '6709', 'Z', '4081', 'D', 'z', 'r', 'i', '8845', '8153', '2271', '6537']

Ex Output:

41135