The road maintenance team repaired a section of the road. On the first day, they repaired the entire length (1/5), and on the second day, they repaired 300 meters, leaving 50% unfinished. How long is this section of road?
公路维护队整修一段公路，第一天整修了全程的(1/5)，第二天整修了300米，还剩下50%没有完成，这段公路有多长？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/5) - (1/2)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">300 / (3/10)</gadget>
<output>1_000</output>

<result>1_000</result>