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', '1669']

A: 1669
****
Q: ['Y', '263', '641', '1163', 'p', 'r', 'L', '4425', 'C', '7585']

A: 14077
****
Q: ['K', '8227', 'F', '9701', 'J', 's', 'd']

A:
17928
****