Wolfram Alpha

I am working on mapping the harmonic series into my midi piano and I wanted to see how close to JI I ended up. (I'm currently trying to duplicate the Michael Harrison sound sort of)

It seems that Wolfram Alpha is able to give reasonable answers to questions like fraction closest to 1.125

http://www.wolframalpha.com/input/?i=fraction+closest+to+1.125

Not sure it is universal yet - just thought I'd pass that along.

Chris