Master Wang bought 6 kilograms of cucumbers, paid the salesperson 15 yuan, and got back 1.2 yuan. How much is a kilogram of cucumbers?
王师傅买了6千克黄瓜，付给售货员15元，找回1.2元，每千克黄瓜是多少钱？
<gadget id="calculator">15 - 1.2</gadget>
<output>13.8</output>

<gadget id="calculator">13.8 / 6</gadget>
<output>2.3</output>

<result>2.3</result>