A road, on the first day, 200 meters were repaired, and 95% of it remained unrepaired. How long is this road?
一条公路，第一天，修了200米，还剩下95%没有修，这条公路有多长？
<gadget id="calculator">95 / 100</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">1 - (19/20)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">200 / (1/20)</gadget>
<output>4_000</output>

<result>4_000</result>