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: ['j', 'A', 'L', 'i', 'I', '3827', '8245', 'H', 'J', '8117', 'w', '4659', 'Y', 'x', 'K']

A: 24848
****
Q: ['z', '447', '9781', 'R', '6083', 'u', '9229', 'Z', 'F', '2437', '9677', 'n', 'G', '6763', '5883', 'B', '9563', '4575']

A: 64438
****
Q: ['8915', '9567']

A:
18482
****