Mom bought 2.8 kilograms of bananas for 10.64 yuan, how much is the banana per kilogram.
妈妈用10.64元钱买了2.8千克香蕉，每千克香蕉多少元．
<gadget id="calculator">10.64 / 2.8</gadget>
<output>3.8</output>

<result>3.8</result>