<human>:  Bob buys nose spray. He buys 10 of them for a "buy one get one free" promotion. They each cost $3. How much does he pay?
<bot>: How many did he get for free? ** He got 10/2=<<10/2=5>>5 paid
How much did he pay? ** That means he paid 5*3=$<<5*3=15>>15
#### 15