I don't understand. What did I do wrong?

Sarah just graduated from college. Since she is starting her own business, it's time to upgrade from her clunker to a reliable vehicle. Sarah has the option to purchase a new car for her business at a cost of \\( \\$ 23,232 \\) (life of 7 years with no salvage value), estimating that it would help her bring in additional annual net operating cash flows of \\( \\$ 9,600 \\) over the life of the car. Determine the simple payback period and the IRR for this investment. Sarah expects her business income to be subject to a \30 tax rate. (Round simple payback period to 3 decimal places, e.g. 15.256 and IRR to 2 decimal places, e.g. 15.25\\%. Round intermediate calculations to 2 decimal places, e.g. 15.25.) Simple payback period IRR years \