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?
There were 123 students - 3 single attendees = 
<gadget id="calculator">123-3</gadget>
<output>120</output>
120 students in couples.
120 students / 2 in a couple = 
<gadget id="calculator">120/2</gadget>
<output>60</output>
60 couples.

<result>60</result>