Uncle Li bought 6 kilograms of cantaloupe and gave him 50 yuan, and the salesperson returned him 2 yuan. How much is a kilogram of cantaloupe?
李叔叔买了6千克重的哈密瓜，给了50元，售货员退给他2元，每千克哈密瓜多少元？
<gadget id="calculator">50 - 2</gadget>
<output>48</output>

<gadget id="calculator">48 / 6</gadget>
<output>8</output>

<result>8</result>