Why did the long expression that had just gotten out of the hospital move more slowly that the short expression?

Since the long expression that had just gotten out of the hospital,  the long expression is maybe weak and has to slowly that the short expression.

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.