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:
['f', 'N', '8597', 't', 'K', '9755', 'j', '9747', '7259', '5493', 'n', '7269', '8493', '2279', '5369', 'f']

Ex Output:
64261


Ex Input:
['O', 'K', 's', 'V', '6815', 'c', '9277', 'V', '1783', 'b', 'i', '2045', 'E', 'E', '2035']

Ex Output:
21955


Ex Input:
['l', 'R', '6031', '581', 'u', '205', '7283', '8859', 'k', 'D', 'T', '1415', '5901', 'b', 'S', '3535', '5111']

Ex Output:

38921