It would be very useful if the number of decimal places being used for both quantity and rate can be extended from 2 to a minimum of 4, and when applying the multiplier the total would continue to round to 2 decimal places.
You could even look to have the number of available decimal places as a user definable field within the company settings?
There are real world scenarios for this request as we do have rates that extend beyond the current places that are available, it would also mirror the available functionality in Sage 50 Payroll.
I hope this is something that can be considered.