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', 'N', 'y', '7859', 'u', '2861', '4151', 'Q', 'x']

A: 14871
****
Q: ['q', 'U', 'I', '5245', 'g', 'Y', 's', 'V', 'b', 'V', 'D', '1193', 'p']

A: 6438
****
Q: ['b', 'I', 'e']

A:
0
****