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]: ['D', '7807', '9395', 'T', 'c', '5139', '2827', 't', 'T', 'm', '3717', 'U', '3225', '7419', '2481', 'p', 'C', '5277']
[A]: 47287


[Q]: ['g', 'h', '9141', '7825', 'a', 'u', '2389', 'r', '9739', '8337', 'Z', 'Z', '6717']
[A]: 44148


[Q]: ['2213', '3189', 'Q', 'a', '3065', 'V', 's', '6237', '1653', '1077', 'b', 'v', 'i', '171', 'Z', 'L', 'J']
[A]:
17605