Convert Milli Seconds to seconds and minutes

declare @milli as int
set @milli = 30251

select @milli/3600000 as hours,
(@milli - ((@milli/3600000)*3600000))/60000 as minutes,
(@milli - (((@milli)/60000)*60000)) /1000 as seconds,
@milli-(((@milli)/1000)*1000) as milliseconds