Final answer:
In Anton Chekhov's story 'The Bet', the lawyer spends the day before winning the bet with the banker reading books.
Step-by-step explanation:
In Anton Chekhov's story 'The Bet', the lawyer spends the day before winning the bet with the banker reading books. In the story, the lawyer has spent fifteen years in isolation, and during this time, he has delved deeply into books and acquired a vast knowledge of different subjects.
On the day before he wins the bet, the lawyer spends his time indulging in literature, presumably to celebrate his impending victory.