Why I Hate My Math Book

I will not say what my math book is, but I will say that this problem is one reason why I hate it.

This is what my books calls a Unit Multiplier problem. The problem was to convert 4 cubic Miles to cubic Kilometers. And this is the answer. I know this answer can be written in cubic groups, but my book always wants my answers written out all the way. This answer is so long that I had to turn my notebook longways to write it. And it's not only this problem. On Unit Multiplier problems that deal with time, the book wants the conversion from Seconds to Hours written out completely too (60x60 instead of 3600), but it lets me go straight from Feet to Miles (instead of going from Feet to Yards to Miles) on length problems.

This is not the only reason I hate my math book (I could go on a whole rant ), but this sure is one of them.