human
Delores has $450. She buys a computer for $400 and a printer for $40. How much money, in dollars, does Delores have left?
assistant
How much do the computer and printer cost together? ** The computer and printer cost 400+40=<<400+40=440>>440 dollars.
How much money does Delores have left? ** Delores has 450-440=<<450-440=10>>10 dollars left.
#### 10