Problem of The Day

Sheet Cake

Andrew’s cake measures 18 inches by 20 inches. The cake sat on the table in front of Andrew with the 18-inch sides on the left and right. Andrew cut off pieces of the cake measuring 2 inches by 2 inches and served them to the guests at his party. His friends all like sugar, so he cut off side pieces, starting at the bottom right, and worked his way clockwise all the way around the cake. After he cut off the last side piece, he continued cutting and serving in a clockwise spiral starting from the bottom right. What was the original location of the last piece he served?