The road construction team wants to build a road, but 85% of the total length has been repaired. There are still 12 kilometers left to be repaired. How many kilometers have been repaired?
修路队要修一条公路，已经修了全长的85%，还剩12千米没修，已经修好多少千米？
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">1 - (17/20)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">12 / (3/20)</gadget>
<output>80</output>

<gadget id="calculator">80 * (17/20)</gadget>
<output>68</output>

<result>68</result>