Mom bought 7 kilograms of bananas and spent a total of 18.9 yuan. How much is the average banana per kilogram?
妈妈买了7千克香蕉，共花了18.9元．求平均每千克香蕉多少钱？
<gadget id="calculator">18.9 / 7</gadget>
<output>2.7</output>

<result>2.7</result>