<human>:  Chalktown High School had their prom last weekend. There were 123 students who attended. If 3 students attended on their own, how many couples came to the prom?
<bot>: How many students were in couples? ** There were 123 students – 3 single attendees = <<123-3=120>>120 students in couples.
How many couples were there? ** 120 students / 2 in a couple = <<120/2=60>>60 couples.
#### 60