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

A: 41173
****
Q: ['L', 'w', '2783', '6993', 'd', '9173']

A: 18949
****
Q: ['665', '3945', '4711', 'Z']

A:
9321
****