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: ['i', 'C', '5373', '2017', 'm', '5435', 'Y', 'h']

A: 12825
****
Q: ['5215', 'c', '839', 'V']

A: 6054
****
Q: ['5101', 'D', 'C', 'W', '7047', 'N', '2277', '6831', 'Q']

A:
21256
****