Mom bought 1.5 kilograms of hairtail, paid 12 yuan, and got back 1.95 yuan. How much is the average hairtail per kilogram?
妈妈买1.5千克带鱼，付12元，找回了1.95元，平均每千克带鱼多少元？
<gadget id="calculator">12 - 1.95</gadget>
<output>10.05</output>

<gadget id="calculator">10.05 / 1.5</gadget>
<output>6.7</output>

<result>6.7</result>