"Andersen's Fairy Tales" is 60 yuan per set, buy 5 sets and get one free. Teacher Li bought 5 sets at a time, how much is each set cheaper?
《安徒生童话》每套60元，买5套送一套．李老师一次买了5套，每套便宜多少元？
<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<gadget id="calculator">60 / 6</gadget>
<output>10</output>

<result>10</result>