Tony had $20. Tony paid $8 for a ticket to a baseball game. At the game, Tony bought a hot dog for $3. Tony had _____ money then .
tony_had_dollars=20
ticket_baseball_dallers=8
bought_hot_dog=3
tony_had_money=tony_had_dollars-(ticket_baseball_dallers+bought_hot_dog)
print(tony_had_money)