If the output of a workshop in June is 25% higher than that in May, and the output in May is 25% higher than that in April, then how much is the output in April lower than in June?
某车间六月份产量比五月份高25%，五月份产量比四月份高25%，那么四月份产量比六月份低多少．
<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">(5/4) * (5/4)</gadget>
<output>25/16 = around 1.5625</output>

<gadget id="calculator">(25/16) - 1</gadget>
<output>9/16 = around 0.5625</output>

<gadget id="calculator">(9/16) / (25/16)</gadget>
<output>9/25 = around 0.36</output>

<result>9/25 = around 0.36</result>