Help bit useage calculation.

[#1]

I listen to on-line radio 24/7.
Now if the station broadcasts using 128Kb/s.
Does this mean :-
(128/8)*60*60*16 = 921600 (Kbytes/day) or 921.6Mb/day = 27.65Gb/Month (assuming 30 days)
Or have I got my calculations wrong?
I am trying to move to a cheaper BB and need to know how much I use, the internet radio is portable so I can't measure the b/w used by it.

[#2]

Where's your 16 coming from?
I did (128/8)*60*60*24*30
Or are you saying that you have it on for 16 hours a day?
I came out with 41.472GB.

[#3]

I was working on 16 hours of charged BB and 8 hours "free". (00:00-08:00)
So I need AT least 20Gb of d/l just to listen to the radio? (well that lets out the "essential" package then)