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: ['q', '5151', 'R', '441']

A: 5592
****
Q: ['6849', 'I', 'p', 's', 'L', '4757', 'j', 'x', 'm', 'P', '5237', '1105', '9015', '9279', 'Q']

A: 36242
****
Q: ['h', 'E', 'X', '671', 'T', 'L', '3511', '9471', '6971', '5587', '2519', '3393', 't', '9371']

A:
41494
****