definiens: for a particular time period shall mean the weighted average, expressed as a percentage, of the Marginal Royalty Rates that would apply under the provisions of this Section 5.4.2(a ) to the aggregate CD20 Product Net Sales in the Territory during such time period ( without regard, for these purposes, to any adjustments made under Sections 5.4.2(b ) or 5.4.2(c ) . By way of example only, if the aggregate Net Sales of CD20 Products in the Territory dUling a calendar year equaled $ 1.2 billion, the CD20 Effective Royalty Rate for such calendar year would be calculated as follows : ( ( 10.0 % of $ 500 million ) plus ( 12.5 % of$500 million ) plus ( .15.0 % of$200 million » divided by $ 1.2 billion, expressed as a percentage, which would equal 11.875 % . By way of further example only, if the aggregate Net Sales of CD20 Products in the Territory during each of the four Calendar Quarters of such calendar year were $ 250 million, $ 275 million, $ 325 million and $ 350 million, respectively ( for a total of$1.2 billion in such calendar year ), the CD20 Effective Royalty Rates for each of the four Calendar QUaJ1ers would be 10 %, 10.227 %, 12.5 % and 13.929 %, respectively