题目

It was a cold winter night when the police officer Lee and the detective Smith were walking back to the police station. They saw a robber attacking an old woman on the road. Lee and Smith ran over to the robber immediately.The robber saw them and ran away as fast as he could. Lee and Smith followed him for a long distance until the robber rushed into an underground station. Lee and Smith ran into the station and tried to find him. It was quite dark outside that night and they couldn't see the robber clearly. But they remembered what his body shape was like.When they went in, they saw six men i18．要使549÷□的商是两位数，□里最小填6；8□5÷4的商中间有0，□里有5种填法．