For the purposes of the formula in the first paragraph,(1) A is the basic tax content of the vehicle at the particular time;
(2) B is the total of the tax payable by the registrant in respect of the last acquisition or bringing into Québec of the vehicle by the registrant and the tax payable by the registrant in respect of improvements to the vehicle acquired or brought into Québec by the registrant after the property was last acquired or brought into Québec; and
(3) C is the total of all input tax refunds that the registrant is entitled to claim in respect of any tax included in the total described in subparagraph 2.