277. Where a commercial activity of a registrant, other than a registrant to whom section 279 applies, consists of taking bets or conducting games of chance and, in the course of that activity, the registrant pays an amount of money in a reporting period as a prize or winnings to a bettor or a person playing or participating in the games, the following rules apply for the purpose of determining an input tax refund of the registrant:(1) the registrant is deemed to have received in the reporting period a taxable supply of a service for use exclusively in the activity;
(2) the registrant is deemed to have paid, in that period, tax in respect of the supply equal to the tax fraction of the amount of money paid as the prize or winnings.