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: ['4159', 'H', 'h', 'W', 'w', 'i', 'G', 'l', 'j', '5467', '9219', 'j', 'q', 'n', '5465', '6197', 'J', 'y']

A: 30507
****
Q: ['q', '867', 'e', 'z']

A: 867
****
Q: ['A', '2157', 'I', 'X', 'y', 'P', '2297', 'L', '7515', 'd', 'H']

A:
11969
****