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]: ['b', 'W', 'V', 'R', '3761', 'U', '4553', '1803', 'W', '7775', '1067', 'Y', 'D', '3159']
[A]: 22118


[Q]: ['J', '5149', 'H', 'L', 'm', 'h', '3863', 'n', 'z']
[A]: 9012


[Q]: ['4159', '7533', '6757', '69', '3787', '6771', 'V', '4317', '8769', '5843', '9231', 'S', 'q', '9299', 'V', 'I', '3673', '9595', '1969']
[A]:
81772