两数相除的商是6.58，如果被除数扩大了100倍，除数只扩大了10倍，那么商____；如果除数扩大了100倍，要使商不变，被除数就____．

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   How are you, Lin? I’m writing1 you at my school. It’s a big middle 2. I’m in a big class. There’re fifty students in my class. There are about two hundred teachers in my school. My  English teacher 3 Miss Liu. 4 is a nice teacher.
   We go to school 5 Monday to Friday. There are four classes in the morning and two in the afternoon. We play games 6 four on Friday after class.
   I have some friends at school. One is 7 America. She speaks English and 8Chinese. I like to play 9 them. We 10 football. That's my favourite game.

已知$\frac{x}{y}$=$\frac{3}{2}$，那么下列等式中一定正确的是（　　）