Four hours, mill running generated 30kg sack of byproduct broken rice, 4 sacks.Each sold at $20.
And also generated a mountain of rice bran.
And all those byproducts are collected and eventually sold to animal farmings who use it as livestock and plantation farming who use it as fertilizer.
In milling business, as long as the mill has rice paddy to polish, it is profitable.
So to be profitable, it has to be in a countryside where nearby villages can easily come polish their rice.