To build a road, 300 meters have been built, which is 25% of the length of the unrepaired road. How many meters are these roads in total?
修一条公路，已经修了300米，是未修公路长度的25%．这批条公路一共多少米？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">300 / (1/4)</gadget>
<output>1_200</output>

<gadget id="calculator">1_200 + 300</gadget>
<output>1_500</output>

<result>1_500</result>