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: ['S', 'W', '2171', '6405', 'h', 'C', '1597', '7109', 'Q', 'p', '2747', 't', 'J', 'q', '1883', 'v', 'O']

A: 21912
****
Q: ['1867', '5301', 'x', '3867', '8707', '2429', 'K', '59', '6629', 'v', 'A', 'y', 'P', '3829', '1979', 'R', '8481', '5767', 'h', 'U']

A: 48915
****
Q: ['4371', 'T', '4275', '9939', '1543', '2099', '8077', 'F']

A:
30304
****