I wonder how difficult it would be to make this a configurable setting? Some installations only need 2 decimals, and some need 3-4. One of my clients is in the pharmacy industry and they require 8 decimal places as they dispense drugs by the milliliter and it has to calculate to a deep precision.

At the moment, only two digits are supported, we should make this more flexible.

We have to change the type of the database column from DECIMAL to FLOAT or DOUBLE. And then we probably have to change some number-formatters, too. To demonstrate this, there's an example here