Built in interest rate and down payment
Changed the variables around
Better naming for car cost amount
Quick math placehoder

I am going to have everything be output at the bottom while I am working
so I can watch for bugs
Final output complete other than spacing

get to that later when the code is all set up correctly
FLAKY Made a bit of a math thingy for interest amount

Going to keep it for now tell I get some other stuff structured
Math bit to get my interest

Dear god remember this commit because I may need to do some work later