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]: ['o', '8089', '2159', '943', '1255', 'w', 'Y', '3723', 'n', '7767', '2209', 'F', 'c', 'J', '5259', '4427', 'n', 'U']
[A]: 35831


[Q]: ['n', 'u', '9595', 'M', 'o', 'K', '5073', 'x']
[A]: 14668


[Q]: ['943', '5125', 'k', '9145', '6581', '819', '4543', 'F', 't', 's', '1799', '1323', '6925']
[A]:
37203