A kind of rice is priced at 3.6 yuan per kilogram, and if you buy 7.5 kilograms, how much should you pay?
一种大米每千克售价3.6元，买7.5千克，应付多少元？
<gadget id="calculator">3.6 * 7.5</gadget>
<output>27</output>

<result>27</result>