GST amount wrong calculation, how to edit?

I’m new here. I create a invoice. And total amount is $10,581.06 , 7% GST should be $740.67 but the result come out is $740.71. How can i change to the correct amount?

GST 7% amount is calculated per each line item separately, then added up.

Almost all accounting packages follow this calculation method and as far as I know, all tax authorities approve this calculation method.