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: ['4241', 'E', '1807', '2877', '5125', '7625', 'S', '401', '5081', 'u', 'R', 'F']

A: 27157
****
Q: ['t', 'x', '5629', 'k', '2003', 'v', '541', 'l', 'v', '7983', '677', '6173', 'z', 'J', 's', 'u', '2187', 'Y']

A: 25193
****
Q: ['3155', '7387', 'D', '2483', '2487', 'v', '3273', '4467', '1067', '7787', 'O']

A:
32106
****