Rounding
This is my situation. I have a product I wish to sell for $120. I have sales tax set to 10%. The product is entered with a price of $109.09. The cart calculates the tax to 2 decimal places, so if I buy 6 of these, the nett is $654.54 and the tax $65.45 = $719.99
What I really need is the calculation to more decimal places
Any clues?