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 Q]: ['1845', '273', '6921', 'u', '165', 'n', 'y', 'I', 'u', 'X', '5503', 'L', 'G', 'V', '6223', '1123', 'v']
[EX A]: 22053

[EX Q]: ['Y', '263', '641', '1163', 'p', 'r', 'L', '4425', 'C', '7585']
[EX A]: 14077

[EX Q]: ['2425', 'q', 'q', '8597', 'h', 'L', 'X']
[EX A]:
11022