My aunt bought a barrel of 5kg cooking oil for 74.8 yuan in the supermarket. Just as the supermarket was doing promotional activities, she gave away a bottle of 0.5kg of the same cooking oil. How much is the average price per kilogram of cooking oil?
阿姨在超市花74.8元买了一桶5千克的食用油，正值超市在做促销活动，赠送一瓶0.5千克的同样的食用油，平均每千克食用油多少钱？
<gadget id="calculator">5 + 0.5</gadget>
<output>5.5</output>

<gadget id="calculator">74.8 / 5.5</gadget>
<output>13.6</output>

<result>13.6</result>