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

A: 36242
****
Q: ['6321', 'M', 'd', '3673']

A: 9994
****
Q: ['h', '5413', '3347', '1245', '9333', '1735', 'l', '6409', '2771', '7067']

A:
37320
****