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: ['N', 'e', '4283', '3243', '5581', '1407', 'q', 'y', '6685', 'v', 'c', '5995']

A: 27194
****
Q: ['B', 'u', '9227', 'b', '8767']

A: 17994
****
Q: ['V', '8717', '7381', '257', 'i']

A:
16355
****