Li Jiong's mother bought 3.6 kilograms of pears and 2.5 kilograms of bananas for 15 yuan, 2.5 yuan per kilogram of pears, how much per kilogram of bananas?
李炯的妈妈用15元钱买了3.6千克梨和2.5千克香蕉，每千克梨2.5元，每千克香蕉多少钱？
<gadget id="calculator">3.6 * 2.5</gadget>
<output>9</output>

<gadget id="calculator">15 - 9</gadget>
<output>6</output>

<gadget id="calculator">6 / 2.5</gadget>
<output>2.4</output>

<result>2.4</result>