Really struggling with this one. Not sure what step I’m missing. Thx so much! Tivo Corporation purchases its raw materials on credit with terms of…

Really struggling with this one. Not sure what step I’m missing. Any help would be greatly appreciated. Thx so much!

Tivo Corporation purchases its raw materials on credit with terms of 3/10, net 30. What is the annual percentage rate (APR) of non-free trade credit if Tivo does not take the discount and pays on Day 30. In your computations, assume there are 360 days in a year.