The dealer never pays off your trade in. It is added back to the NEW item that you buy. If your trade was paid for then the money that they would give you for it would reduce your NEW item, but being you owe, it really increases it.
The 2 lines you are missing is
Vehicle Price - $74,547.00
Options - N/A
Retail Discount - $9,657.00
Customer Price - $64,890.00
Trade Allowance - $18,000
Trade Difference - $46,890
"Pay off SUV - $17,500"
"Total financed before interest..... $64,390"
Estimates Payment Option
$6,000 Down - 180 Months - APR 5.99% - Payment $524.33
NOTE-- TOTAL WITH INTEREST....... $100,379.40