Times passed. Lorenzo did his daily activities while waiting for more information from Calvin. A few days later, exactly one day after passing the maximum day estimated by Calvin, Lorenzo became confused because he still didn't have any other information from Calvin.

"How come there are no results from Calvin? Usually, I get results from Calvin in a short time." Lorenzo asked in his heart.

"Should I just call him?" asked Lorenzo again in his heart.

"Ah! I think I'd better call him first. Perhaps he forgot." Lorenzo said in his heart.

Lorenzo immediately took his phone and looked for Calvin's contact. Then he called Calvin. He waited a few...