Lizhuang's wheat yield per hectare last year was 4,000 kilograms. This year, the yield per hectare has increased by 400 kilograms compared with last year.
李庄去年每公顷的小麦产量是4000千克，今年每公顷比去年增产400千克，今年小麦比去年增产了几成？
<gadget id="calculator">400 / 4_000</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>