I just read the news at channelnewsasia.com
about the Formula 1.

"The race took place in downtown Singapore under 1,500 specially created spotlights that were said to be four times brighter than that of those at football stadiums. The government of the city-state is reportedly shouldering 60 percent of the annual tab of 100 million dollars (68.5 million euros) to host the event, for which it has a five-year contract. "

look at how much they spend. and i bet singapore gonna earn much more than that.