human
Elmo has 3 times as many books as his sister, Laura. Laura has twice as many books as her brother, Stu. If Elmo has 24 books, how many books does Stu have?
assistant
How many books does Laura have? ** Laura has 24/3=<<24/3=8>>8 books.
How many books does Stu have? ** Stu has 8/2=<<8/2=4>>4 books.
#### 4