It is fun keeping track of box-office numbers.
Even those of us who know less than nothing about the movie business - or any business - think we can gauge a movie's success or failure on a cursory glance at its opening weekend earnings.
But do any of us really understand this stuff?
Do the movie budgets posted on the Internet have any basis in reality? Do they even include marketing expenses?
What percentage of the profits do the movie theatres take?
How much are the actors making on the "back end"? And what is a "back end"?
Do the numbers mean different things in different countries?
Who really knows?
Not me, for sure.
For what it is worth, all I can really tell you is that the Rurouni Kenshin series seems to be doing incredibly well.
The first film, Rurouni Kenshin, made US$60 million (S$76 million) worldwide in 2012.
Rurouni Kenshin: Kyoto Inferno, the first in a two-part sequel which opened in August, is already the fourth highest-grossing movie this year in Japan.
When the second part, Rurouni Kenshin: The Legend Ends, opened in Japan a couple of weeks back, it was the No. 1 movie there, bringing in 1.3 billion yen (S$15 million) over a three-day holiday weekend.
It has a strong chance of being the second highest-grossing flick this year at the Japanese box office.