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: ['9989', 'B', 'E', '5181']

A: 15170
****
Q: ['2469', 'c', '6931', 'a', '2167', '9493', '9403', '4123', '4949', 'R', 'V', 'h', '315', 'T', '9411', 'M', '1329', '8217', '6105', 'Y']

A: 64912
****
Q: ['7685', '5587', 'k', 'p', '1421', 'd', 'e', 'k', 'R', 'k', 'j', '2531', '3207', '3573', 'r', '4043', '5589', 'z']

A:
33636
****