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.

[Q]: ['T', '721', '6555', 'g', 'y', 'U', '3053', 'A', '9663']
[A]: 19992


[Q]: ['b', '5689', '119', 'p', 'P', 'J', 'w', 'm', '7397', 'Y', '447', 'O', 'p', '319', 'H', 'U']
[A]: 13971


[Q]: ['J', '5931', '8725', '7955', '5789', 'y', '9413', 'y', '4545', 'a', 'n', 'o', '7137', 's', 'H']
[A]:
49495