Well, if you tokenize let's say 50% of your asset in 2007 - it is valued at 4mln$. 50% is 2mln$. You put that on our platform with a 10-year set buy back. Investors buy your tokens and you sell 50% of your asset getting 2mln$ cash.
10 years go by it's 2017. Now you have to buy back you asset. After valuation it is concluded that your asset costs 12mln$. And you need to buy back 50% of that. That is 6 mln$. You will need to pay that amount to buy back your asset.
There is no interest inolved only the change in market price.