You just bought equipment from Gray Lake Agriculture. You will receive a cash rebate of $$2,100$ from Gray Lake Agriculture in $4$ years, pay $$28,000$ to Gray Lake Agriculture in $8$ years, receive a cash rebate of $$1,600$ from Gray Lake Agriculture in $11$ years, and pay $$2,300$ to Gray Lake Agriculture in $18$ years. The discount rate is $6\mathrm{.}21$ percent per year. What is the present value of the cash flows associated with this transaction? Note: the correct answer is less than zero.

dollars