Xiaoke and Song both want to buy a set of why, but they don't have enough money. Xiao Ke Shao 18.3 yuan, Xiao Song Shao 23.7 yuan. Together, he can buy this set of books. How much is this set of books?
After the decimal point of the number is moved 2 places to the left, it is less than the original 13.068. What is the decimal point?