A road has been repaired for 20 meters, which is 25% more than the unrepaired road. How many meters is more than the unrepaired road?
一条路已修20米，比未修的多25%，比未修的多多少米？
<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">20 / (5/4)</gadget>
<output>16</output>

<gadget id="calculator">16 * (1/4)</gadget>
<output>4</output>

<result>4</result>