All interest, as well as fees and other charges calculated on a per annum basis, shall be computed for the actual days elapsed, based on a year of 360 days, or, in the case of interest on Canadian Prime Rate Loans and Canadian BA Rate Loans, on the basis of a 365 day year. Each determination by Agent of any interest, fees or interest rate hereunder shall be final, conclusive and binding for all purposes, absent manifest error. All fees shall be fully earned when due and shall not be subject to rebate, refund or proration. All fees payable under Section  3.2 are compensation for services and are not, and shall not be deemed to be, interest or any other charge for the use, forbearance or detention of money, except to the extent such treatment is inconsistent with any Applicable Law. A certificate as to amounts payable by Borrowers under Section  3.4 , 3.6 , 3.7 , 3.9 or 5.8 , submitted to Borrower Agent by Agent or the affected Lender shall be final, conclusive and binding for all purposes, absent manifest error, and Borrowers shall pay such amounts to the appropriate party within 10 days following receipt of the certificate. For the purpose of complying with the Interest Act (Canada) , it is expressly stated that where interest is calculated pursuant hereto at a rate based upon a period of time different from the actual number of days in the year (for the purposes of this Section, the “first rate”), the yearly rate or percentage of interest to which the first rate is equivalent is the first rate multiplied by the actual number of days in the calendar year in which the same is to be ascertained and divided by the number of days in the shorter period, and the parties hereto acknowledge that there is a material distinction between the nominal and effective rates of interest and that they are capable of making the calculations necessary to compare such rates and that the calculations herein are to be made using the nominal rate method and not on any basis that gives effect to the principle of deemed reinvestment of interest. “ Each Canadian Domiciled Obligor confirms that it understands and is able to calculate the rate of interest applicable to the  Canadian Facility  Obligations based on the methodology for calculating per annum rates provided in this Agreement. Each Canadian Domiciled Obligor irrevocably agrees not to plead or assert, whether by way of defense or otherwise, in any proceeding relating to this Agreement or any other Loan Document, that the interest payable under this Agreement and the calculation thereof has not been adequately disclosed to the Canadian Domiciled Obligors as required pursuant to Section 4 of the Interest Act (Canada).