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: ['A', '9785', '1739', 'x', '2389', 'O', 'J', '1407', '9067', 'x', '9747', '2485', '4631', '6021', '4077', '2779', 'V', '2449', '7401']

A: 63977
****
Q: ['3809', '9401', '63', '5705', 'u', '6275', 'k', 'l', '1171', '9365', 'L', 'O', '7431', '8567', 'h', '6135']

A: 57922
****
Q: ['3155', '8457', '7413', 'Y', '4385', '5037', 'p', 't', 'r', 'N', 'l', '5685', '6889', 'B']

A:
41021
****