Aunt Li went to the vegetable market to buy vegetables. She bought 3 kilograms of meat at 25.6 yuan per kilogram. The weight of potatoes she bought was 1.1 kilograms more than twice the weight of meat, and the potatoes were 4.8 yuan per kilogram. It cost more to buy potatoes than to buy meat. How much less?
李阿姨去菜市场买菜，买回3千克肉，每千克25.6元，买回土豆的重量是肉的2倍多1.1千克，土豆每千克4.8元，买土豆花的钱比买肉花的钱少多少？
<gadget id="calculator">25.6 * 3</gadget>
<output>76.8</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 + 1.1</gadget>
<output>7.1</output>

<gadget id="calculator">7.1 * 4.8</gadget>
<output>34.08</output>

<gadget id="calculator">76.8 - 34.08</gadget>
<output>42.72</output>

<result>42.72</result>