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: ['4685', 'q', 'O', 'o', '3453', 'o', 'Y', 'C', 'a', 'i', '7283', 'J', 'n', 'Q', 'i']

A: 15421
****
Q: ['6551', 'm', '3941', 'F', 'K', 'u', '7981', '9581', 'X', 'M', 'N', 'e', 'G', 'i']

A: 28054
****
Q: ['1661', 'x', '9619', 'n', '4431', '6091', '5081']

A:
26883
****