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: ['G', 'e', 'R', '4427', '3401', '3065', 'I', '2781', '6829', '5261']

A: 25764
****
Q: ['m', 'g', '7251', '5873', '59', '7345']

A: 20528
****
Q: ['X', 'W', '1475', 'c', '9829', 'p', 'K', 'W', 'M', '1745', 'w', 'C', 'T', '57', 'e', 'b']

A:
13106
****