One day, in a supermarket, there was a commodity with a unit price of 1. 1 yuan, and one of them 1 said to the decimal point, "What are you, always standing between our two brothers, so that we can't get together?" The decimal point listened to his words and quietly left. For a time, the prices of goods in the supermarket soared, ranging from a dozen yuan to several hundred yuan. Business in this supermarket is depressed because of the soaring price. Why is this? A number suddenly remembered the decimal point. Could it have something to do with it? After discussing the number family, the importance of decimal point was discovered. At this time, the decimal point has quietly returned to their original work place and said, "We haven't left at all, just hiding in one place. When the crisis comes, we will help you solve it."