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: ['2775', '7405', 'F', 'D', '9025', '827', 'e', 'j', 's', 'e', 'Q', '1137', 'G']

A: 21169
****
Q: ['n', '6729', 'p', 'D', 'o', '1213', 'e', '6951', '2341', '9997', 'e', 'M', 'x', 'R']

A: 27231
****
Q: ['e', 'j', '737', '6809', 'B', '677', '7495', '2179', 'Z', '8751', '2135']

A:
28783
****