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: ['v', 'a', 'O', 'S', 'r', 'T', 'r', 'K', 'K', '7781', '1749']

A: 9530
****
Q: ['Z', '4157', '5185', 'U', 'i', '1115', 'A', '7427', '3313', 'S']

A: 21197
****
Q: ['5899', '229', 'm', '3347', 'k', 'q', 'g', '2755', '8727', '2035', '823', '6835', '9271', 'Q']

A:
39921
****