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: ['o', 'J', 'B', '7765', '7781', '5513', '8721', 'u', '9557', 'C', 'A', '1281', '6565', 'H', '5559', '1695', '7577']

A: 62014
****
Q: ['6001', '6423', '5591', '8721', 't', 'x', '3723', 'E', 'F', '7353', 'b']

A: 37812
****
Q: ['2401', 'M', 'T', '3691', '3637', 'I', 'X', '1025', '3571', 'o', 'K', 'T', '1399', '9745']

A:
25469
****