Uncle Li cultivated 500 pine saplings, 25% more than the original plan. How many pine seedlings were originally planned to be cultivated?
李大伯培育500棵松树苗，比原计划多25%．原计划培育松树苗多少棵？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">500 / (5/4)</gadget>
<output>400</output>

<result>400</result>