Mom buys 8 kilograms of tomatoes for 12 yuan less than buying 8 kilograms of bananas. Tomatoes cost 4.5 yuan per kilogram. How much is banana per kilogram?
妈妈买8千克西红柿比买8千克香蕉少用12元，西红柿每千克4.5元，香蕉每千克多少钱？
<gadget id="calculator">4.5 * 8</gadget>
<output>36</output>

<gadget id="calculator">36 + 12</gadget>
<output>48</output>

<gadget id="calculator">48 / 8</gadget>
<output>6</output>

<result>6</result>