Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
If Stu has 9 books and Albert has 4 times as many books as Stu, how many books do Stu and Albert have in total?

### Response:
Albert has 4 * 9 books belonging to Stu = <<4*9=36>>36 books.
So together, Stu and Albert have 9 books belonging to Stu + 36 books belonging to Albert = <<9+36=45>>45 books.
#### 45