题目

The new school term is coming. Now the school clerks are planning a new timetable for Class 5，Grade 7. There are six classes every day，four in the morning and two in the afternoon. The students have a math class every day. And they have seven English classes in a week. Two of them are given by a foreign teacher and should be arranged （安排） together on Thursday morning. There are five Chinese classes in a week. Two of them should also be arranged one after the other for the students to write their compositions. They have two physics classes in a week but on different days. B学校要砌一道长28米，厚0.25米，高3.6米的砖墙，如果每立方米用砖500块．一共需要多少块砖？