The planned afforestation is 25 hectares, and the actual afforestation is 30 hectares. How much is the actual increase compared with the plan.
计划造林25公顷，实际造林30公顷，实际比计划增加了多少．
<gadget id="calculator">30 - 25</gadget>
<output>5</output>

<gadget id="calculator">5 / 25</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>