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: ['R', 'C', 'S', 'x', '1529', 'r']

A: 1529
****
Q: ['v', 'Y', '4135', '8645', '263', '5377', '8677', 'Z', 'W', 'g', 'n', 'r', 's', '8513', '5677', 'u', '3033', 'I']

A: 44320
****
Q: ['T', 'I', '5411', '5565', '9551', '3641', '9203', '3127', '9191', 'Z', 'w', '7585', '3595', '9029', '1357', '7043', '2837', 'A', 'd', '3009']

A:
80144
****