How much do the woman’s parents pay each semester (学期)?

M: How are you paying for your college, education?
W: My expense for every semester is almost ＄15,000. At the start of each semester my parents pay the ＄10,000 in tuition. I also get ＄2,000 in financial aid. I have to earn the rest myself.
M: How do you do that?
W: I have a part-time job at a hotel. I work about twenty hours a week, and earn ＄400. Mter taxes, I make about ＄320.
M: How do you spend the money?
W: It helps to pay for my room and board on campus. It also pays for things like my cell phone, book, transportation, and clothes.
M: You don’t have much money for fun, do you?
W: That’s time ! I stick to my budget carefully so I don’t have to borrow. I don’t like to owe people money. I hardly ever go to movies. My roommates and I usually rent videos, and split the cost, so it’s cheaper.
M: How else do you save money?
W: I don’t go to restaurants. I make meals with my roommates so it’s cheaper to eat. I try to walk or ride my bicycle to college. Oh, and I buy a lot of my clothes at second-hand stores. You can find some very cheap, decent clothes in those stores.