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: ['8147', '3191']

A: 11338
****
Q: ['5427', '6933', 'R', 'T', '2969', 'X', '7', '7275', '7709', 'o', 'z', '6817', 'A']

A:
37137
****