Please help me to solve this problem by using calculator

6. Frank would like to purchase a Mercedes 450 SL that sells for $50,000. He plans to take out a 5-year loan at a 12% annual rate. The most that Frank can afford for monthly payments is $1,000, but he can sell his current car to raise additional cash for a down payment. What is the minimum amount that Frank can accept for his current car and still be able to purchase the Mercedes