People have written down puzzles for nearly 5000 years. One of the first puzzle collections was recorded about 1650 B. C. on a scroll called the Rhind papyrus. The word Rhind comes from the name Henry Rhind, a Scottish archaeologist who explored Egypt. Papyrus is a paper-like material that was used as a writing tablet by ancient Egyptians. The Rhinid papyrus is a scroll that is over 18 feet long and about a foot wide. It was written on both sides by a person named Ahmes. Roughly translated (and somewhat updated), one of the puzzles from the scroll is presented below. There are seven houses, each containing seven cats. Each cat kills seven mice, each mouse would have eaten seven ears of corn. Each ear of corn would have produced seven sacks of grain. What is the total number of all of these items?