73.4.2.If, on the issue of a restricted licence referred to in section 76.1.1 of the Highway Safety Code (chapter C-24.2), the authorization to drive is valid for less or more than 12 months, the amount of the duties payable is the product obtained by multiplying the monthly duties calculated according to the third paragraph of section 73.4.1 by the number of months, including parts of a month, less one, during which the licence holder is authorized to drive.