Read this and answer the question. If the question is unanswerable, say "unanswerable".

One rescue team reported only 2,300 survivors from the town of Yingxiu in Wenchuan County, out of a total population of about 9,000. 3,000 to 5,000 people were killed in Beichuan County, Sichuan alone; in the same location, 10,000 people were injured and 80% of the buildings were destroyed. The old county seat of Beichuan was abandoned and preserved as part of the Beichuan Earthquake Museum. Eight schools were toppled in Dujiangyan. A 56-year-old was killed in Dujiangyan during a rescue attempt on the Lingyanshan Ropeway, where due to the earthquake 11 tourists from Taiwan had been trapped inside cable cars since May 13. A 4-year-old boy named Zhu Shaowei (traditional Chinese: 朱紹維; simplified Chinese: 朱绍维; pinyin: Zhū Shàowéi) was also killed in Mianzhu City when a house collapsed on him and another was reported missing.

What is the number of schools that collapsed in Dujiangyan?
Eight schools