With all the goodness the iPhone calculator has, I feel like we need another method, for those of us not marked by the hand of Steve Jobs, to calculate stuff. However, the formula for working out the e-juice recipes seems to be some kind of industry guarded secret, I was wondering if there is anyone out there who could give me the math formula for working this out, so I can go off and do what I do best, and build a J2ME app, for those who want a portable calculator but do not have iPods/iPhones.