The toffee factory produced a total of 15,000 boxes of toffee in October last year, and 18,000 boxes in November. How much more did November produce than October?
奶糖厂去年十月份共生产奶糖1.5万箱，十一月份生产1.8万箱，十一月份比十月份增产多少
<gadget id="calculator">1.8 - 1.5</gadget>
<output>0.3</output>

<gadget id="calculator">0.3 / 1.5</gadget>
<output>0.2</output>

<result>0.2</result>