a) What was the purchase price of the used truck excluding the incentive given? (in dollars)

Please provide clear working with the right solution including a s step by step approach of the answer.

HQ Ltd. purchased a used truck from Trans Auto Sales Inc. HQ paid a $3,600 down payment and signed a note that calls for 36 payments of $1,031.00 at the end of each month. The stated rate of interest in the note is 5%. As an incentive for entering into the contract, Trans has two payments under the lease. (For calculation purposes, use 5 decimal places as displayed in the factor table provided. Round final answers to 2 decimal places, e.g. 5,275.25.)