A pair of table tennis rackets is 12 yuan, and the shopping mall holds a buy five get one free event. Xiao Li buys 5 sets at a time, how much cheaper is each pair?
一副乒乓球拍12元，商场举行买五送一活动，小李一次买5副，每副可便宜几元？
<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">12 * (5/6)</gadget>
<output>10</output>

<gadget id="calculator">12 - 10</gadget>
<output>2</output>

<result>2</result>