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]: ['F', 'v', 'G', '6023', 'M', 'Q', 'A', '8477', '2079', 'A', '813', 'C', '3479', 'G', '1977', '5569', '8749', 'Y']
[A]: 37166


[Q]: ['7067', 'E', 'C', '1879', 'Z', 'u', 't', '2053', '6769', 'r', '5207', '7009', 'H', '5587', 'i', 'M', '1357', 'A']
[A]: 36928


[Q]: ['6415', '9409', '5813', '8023', '5951']
[A]:
35611