township originally planned to afforest 12 hectares last year, but the actual afforestation was 15 hectares. How much more than the original plan was the actual afforestation?
一个乡去年原计划造林12公顷，实际造林15公顷，实际造林比原计划多多少
<gadget id="calculator">15 - 12</gadget>
<output>3</output>

<gadget id="calculator">3 / 12</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>