Thirty years ago, Bruce Wayne bought a Batmobile for
729
729729 million dollars. As the crime in Gotham City has been down for a while, he plans to sell it.
How much can he get for the Batmobile today if the price goes down by
33
1
3
%
33
3
1
​
%33, start fraction, 1, divided by, 3, end fraction, percent every
5
55 years?