A project was originally planned to be completed in 8 days, but the actual 8 days exceeded 20% of the original 8 days. How much was the 10 days beyond the original 10 days? (fill in percentage).
一项工程原计划8天完成，但实际8天超量完成原来8天的20%，10天超出原10天的多少？(填百分数)．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) / 8</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">(1/40) * 10</gadget>
<output>1/4 = around 0.25</output>

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