Aircraft purchasing from market

Im at a loss here. I see an aircraft for sale on the market. It's a $6million down payment with a $440k installment.  At the end of the week it now shows $12million for loan payment. What did I miss? I guess I assumed the installment of $440k meant that's what my weekly cost would be. 

Your interest …

Your interest ..

So there's 12mil a week in interest? How is that even possible. Wow. 

So there's 12mil a week in interest? How is that even possible. Wow. 

At a downpayment of 6m I'd estimate your weekly interest rate to roundabout 10%.

People often miss what's written to the top right of the traders page: "Your current interest rate for aircraft purchases is x.xx%. Note that weekly interest payments have to be added on top of the loan installments stated in the offers!"