ReadOasis Step 4(Part 1)

It was two hours before closing time. But Mr. Lee had to ask his customers to leave the store. “I’m very sorry. You have to leave now. I have special business to take care of.”
His wife looked sad. "The store is so busy, but we can’t sell any more food today,” she said.
Moving his customers out of the store, Mr. Lee apologized again. “I’m so sorry. I’m so sorry.” Then he locked up the store and walked away. Mrs. Lee followed him.
"How much do you think we will have to...