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: ['A', 'y', 'u', 'S']

A: 0
****
Q: ['8591', 'J', 'l', 'l', '7023', 'N', 'n']

A: 15614
****
Q: ['39', '2867', 'C', 'd', '9983', 'Z', 'E', '4163']

A:
17052
****