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.

[EX Q]: ['1001', 'T', 'w', 'f', 'Q', '4035', 'b', 'q', 'x', 'R']
[EX A]: 5036

[EX Q]: ['1693', '9237', '7591', '1593', 'R', '6295', '9379']
[EX A]: 35788

[EX Q]: ['695', 'A', '2029', '8673', 'G', 'J', 'a', '7121', 't', '3259', 'U', '9843', 'C', 'J', 'D', 'm', 'P', 'S', '155', 'R']
[EX A]:
31775