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: ['5829', '9755', '67', 'F', '6347', 'p', 'i', 'X', 'z', 'o', '2321', 'F', '6145', 'B', '3903']

A: 34367
****
Q: ['5331', 'f', '2865', '6019', 'U', 'm', 'g', 'n', 'Y', 'A']

A: 14215
****
Q: ['5233', '1897', '8471', '59', '9663', 'D', '9683', 'S']

A:
35006
****