How many mg/L of something to I need to add to soften 10 MGD of water. Fuck you metric.
Commiserations and welcome to the club! I have to convert all the time when talking with Americans here. °C to °F, g & kg to oz & lbs, ml & l to liquid oz and Gallons, cm, m & km to inches, feet, yards and miles, g/ml to cups - and the other way round. Not to mention all the different timezones.
(btw, does someone happen to know how many grams a cup of butter equals? And how heavy is a stick of butter in the US?? In Germany it's half a [metric] pound)