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]: ['6941', 'I', 'j', '6135', '6525', '7853', '5607']
[A]: 33061


[Q]: ['r', '6537', '3001', '7879']
[A]: 17417


[Q]: ['1931', 'u', '499', 'e', '6191', '7317', '6521', '2293', '8237', '6085', 'V', '8051', 'c', '2161', '3469']
[A]:
52755