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:
['1965', '8127', 'x', '4981', '8077', 'O', '467', '701', 'V', 'm', 'y', '5989', '123', 't', '4019', 'j', '1827', '8799']

Ex Output:
45075


Ex Input:
['A', '771', 'Q', 'b', '9929', '4991', 'q', '9863', '4363', '5721', 'C', '991', 'j', 'r', 'Q', 'B', 'K']

Ex Output:
36629


Ex Input:
['9583', '2375', '4923', '6259', 'x', '5913', 'x', 'e', '8907', '4221', 'x', '5211', '731', 'J', 'F', 'f']

Ex Output:

48123