300
If you want to check out the book More Scary Stories to Tell in the Dark, it shows the Call #: 398.2 SCH. Is this book Fiction or Nonfiction and how do you know? Would you look in the letter section or the number section first?
It is Nonfiction because it has numbers listed. You'd want to look in the 300 section for this book. There may be a few books with the same call # 398.2. Once you find that number section, then you'd look for the letters SCH to find the correct book.