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:
['r', 'b', 'G', 'H', '255', '6809', '5133', '1059', '4317', 'P', '7219', 'd', '805', 'G', '5243', '8305', '8509', 'o']

Ex Output:
47654


Ex Input:
['2895', '8095', 'y', '1927', '4827']

Ex Output:
17744


Ex Input:
['t', 'E', 'o', 'A', 'F', '6023', '9779', '2115', 'R', 'c', '9165', 'N', 'g', 'z', 'O', '5101', '6451', 'd']

Ex Output:

38634