The price of assorted candies per kilogram is 5.6 yuan. Aunt Li bought 3.5 kilograms of assorted candies and paid the cashier 50 yuan. How much should I get back?
什锦糖每千克的售价是5.6元，李阿姨买了3.5千克什锦糖，付给收银员50元，应找回多少钱？
<gadget id="calculator">5.6 * 3.5</gadget>
<output>19.6</output>

<gadget id="calculator">50 - 19.6</gadget>
<output>30.4</output>

<result>30.4</result>