definiens: shall mean the following : Net Sales for suchcombination product will be adjusted by multiplying actual Net Sales of such combinationproduct by the fraction A/(A + B ) where A is the weighted ( by sales volume ) averageinvoice price of the Product, if sold separately, and B is the weighted ( by sales volume)average invoice price of any other active ingredient, device or component in thecombination, if sold separately . If, on a country - by - country basis, the other activeingredient, device or component in the combination is not sold separately, Net Sales shallbe calculated by multiplying actual Net Sales of such combination product in such countryby the fraction A / C where A is the invoice price of the Product, if sold separately, in suchcountry and C is the invoice price of the combination product in such country . If, on acountry - by - country basis, neither the Product, nor the other active ingredient, device orcomponent of the combination product, is sold separately, Net Sales shall be determinedby the Parties in good faith