I love Alfred, and I invoke it all the time to use the Calculator function.
Though, I find that the results often have a cramped visual read out, the kerning between the numbers is a bit tight and difficult to read, I think it could be better spaced out visually.
Example: the "785" is very closely spaced and could breathe more, and thus be more easily readable.
Actually, the Kerning across all results could probably increase, as it all does feel very tight.
Maybe it could even be a user adjustable setting?
Also, is there any chance Spotlight's currency conversions could make their way to Alfred too?