definiens: shall mean the following : Net Sales for such combination product will beadjusted by multiplying actual Net Sales of such combination product by the fraction N(A + B ) where A is theweighted ( by sales volume ) average invoice price of the Product, if sold separately, and B is the weighted ( by salesvolume ) average invoice price of any other active ingredient, device or component in the combination, if soldseparately . If, on a country - by - country basis, the other active ingredient, device or component in the combination isnot sold separately, Net Sales shall be calculated by multiplying actual Net Sales of such combination product insuch country by the fraction NC where A is the invoice price of the Product, if sold separately, in such country and Cis the invoice price of the combination product in such country . If, on a country - by - country basis, neither the Product, nor the other active ingredient, device or component of the combination product, is sold separately, Net Sales shall be [ * * * ]