The roses in the flower shop are 12 yuan a piece. Now buy 5 roses and get 1 free. If you buy 5 roses at a time, how much is each rose cheaper?
花店的玫瑰花12元一支，现在买5支送一支，一次买5支，每支便宜多少钱？
<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>