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: ['E', 'y']

A: 0
****
Q: ['1875', '9833', 'i', '7493', 'J', 'P', 'z']

A: 19201
****
Q: ['k', 'N']

A:
0
****