Please answer a question about the following article about 2008 Sichuan earthquake:

The Red Cross Society of China flew 557 tents and 2,500 quilts valued at 788,000 yuan (US$113,000) to Wenchuan County. The Amity Foundation already began relief work in the region and has earmarked US$143,000 for disaster relief. The Sichuan Ministry of Civil Affairs said that they have provided 30,000 tents for those left homeless.

How many tents were flown to the region?
557