New to programming and I'm currently trying to solve a problem at bootcamp where I have to calculate the discounted amount of a book order totaling 55 books and discount of shipment fee of $3 for the first book and 75 cents for the rest. https://i.stack.imgur.com/1HxaO.jpg The answer I always get is 866.85 but the answer was supposed to be 866.8499999999999 and I have no idea how to solve it.
Really appreciate any clarifications on what I did wrong on this one!