Rice is 3.60 yuan per kilogram, and rice cake is 2.80 yuan per kilogram. If you buy 8 kilograms of rice and rice cakes and pay 60 yuan, how much should you get back?
大米每千克3.60元，年糕每千克2.80元．买大米和年糕各8千克，付60元钱，应找回多少元？
<gadget id="calculator">3.6 * 8</gadget>
<output>28.8</output>

<gadget id="calculator">2.8 * 8</gadget>
<output>22.4</output>

<gadget id="calculator">28.8 + 22.4</gadget>
<output>51.2</output>

<gadget id="calculator">60 - 51.2</gadget>
<output>8.8</output>

<result>8.8</result>