I'd actually like to know how to do it, so please show work? :)

Heer Enterprises needs someone to supply it with 225,000 cartons of machine screws per year to support its manufacturing needs over the next 7 years, and you've decided to bid on the contract. It will cost you $1,170,000 to install the equipment necessary to start production; you'll depreciate this cost straight-line to zero over the project's life. You estimate that in 7 years, this equipment can be salvaged for $75,000. Your fixed production costs will be $360,000 per year, and your variable production costs should be $12.75 per carton. You also need an initial investment in net working capital of $112,500, all of which will be recovered when the project ends. Your tax rate is 32 percent and you require a 13 percent return on your investment. What bid price per carton should you submit?