> I was going to say - just use FLOAT and just cast your answers each time to
> 15,5 if that's what you really want.
> I'm an odd man out here. I use FLOAT for everyting including currency. I
> just cast the result the way I need it. I've never had an issue

Do you really meam FLOAT or DOUBLE PRECISION ?
FLOAT has precision of 7 digits only.

Ivan