“We have happy customers, lots of coins, and our very own record book!” Mia said.

“I’ve run my restaurant for many seasons. My restaurant-owner's ears can tell.”  Billy said, a toothy grin spreading across his fuzzy face.

“We can’t give you these,” Mia said, her voice shaking. “I’m so sorry. We made a mistake.”

“We spent twelve coins but only got back nine. That means . . . we were spending more than we earned.” Mia said.