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]: ['6515', '5525', 'o', 'Q', '9049', 'f', 'p', 'X', '2057', 'h', '7585', '3617', '7817']
[EX A]: 42165

[EX Q]: ['3629', '8785', '9537', '8479', '3523', 'c', 'C', '5093', '2405', 'y', '1145', '8987', 'f']
[EX A]: 51583

[EX Q]: ['2211', 'm', 'P', 'n', '6027', 'G', '3395']
[EX A]:
11633