A road construction team built a road of 20.4 meters on the first day, and the length of the road on the second day was 1.5 times that of the first day. How much more meters were repaired on the second day than on the first day?
某修路队第一天修路20.4米，第二天修路的长度是第一天的1.5倍，第二天比第一天多修多少米？
<gadget id="calculator">20.4 * 1.5</gadget>
<output>30.6</output>

<gadget id="calculator">30.6 - 20.4</gadget>
<output>10.2</output>

<result>10.2</result>