Ellery was playing a game with a balloon, trying to keep it of the ground. At first, she gave herself 10 chances for it to touch the ground. When she had used those chances, she said, "It's okay, I still have ninety-ten chances left."
"I don't think that's a real number," Sarah said doubtfully.
"It is," Ellery assured her. "You just don't hear it very often."