The answer (5,506) for "worst case" is wrong, please show me how to get the right answer or tell me the right answer. Thank you

Square Manufacturing is considering investing in a robotics manufacturing line. Installation of the line will cost an estimated $10.4 million. This amount must be paid immediately even though construction will take three years to complete (years 0, 1, and 2). Year 3 will be spent testing the production line and, hence, it will not yield any positive cash flows. If the operation is very successful, the company can expect after-tax cash savings of $7.4 million per year in each of years 4 through 7. After reviewing the use of these systems with the management of other companies, Square's controller has concluded that the operation will most probably result in annual savings of $5.6 million per year for each of years 4 through 7. However, it is entirely possible that the savings could be as low as $3.2 million per year for each of years 4 through 7. The company uses a 20 percent discount rate. Use Exhibit A.8. Required: Compute the NPV under the three scenarios. (Round PV factor to 3 decimal places. Enter your answers in thousands of dollars. Negative amounts should be indicated by a minus sign.) Net present value Best Case Expected Worst Case s 685 s (2,011) s (5,506)