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: ['f', 'N', '8597', 't', 'K', '9755', 'j', '9747', '7259', '5493', 'n', '7269', '8493', '2279', '5369', 'f']

A: 64261
****
Q: ['9211', '1889', '7371', '9649', 'b', 'y', 'q', 'a', 'i', '1137', '3291', '8625']

A: 41173
****
Q: ['n', 'O', 'Z', '5333', 'T', 'K', '6421', 'q', '5769', 'b', 'f', 'h', 'r', 'Z', 'd', '9839', 's', '4631', '1903']

A:
33896
****