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: ['457', '173', '6807', 'o', '555', 'l', 's', 'Z', 'm', '3035', '1283', '5645', 'S', '8641', 'J', 'Z', 'z', 'K']

A: 26596
****
Q: ['4425', 'x', '1959', 'C', 'c', 'D', 'M', '8317', 'q', 'x', '4277', 'N', 'z', 'I', '1921', 'o', 't']

A: 20899
****
Q: ['955', 'b', 'x', 'q', 'e', 'i', 'n', 'm', 'P', '4325', '4273', '1455', 'u', 'C', 'T', 'P', '857', 'l', 't', '9453']

A:
21318
****