A highway is 81 kilometers long, and 46 kilometers have been repaired. What fraction of the full length is left unfinished?
一条公路长81千米，已经修了46千米．还剩下全长的几分之几没修？
<gadget id="calculator">81 - 46</gadget>
<output>35</output>

<gadget id="calculator">35 / 81</gadget>
<output>35/81 = around 0.432099</output>

<result>35/81 = around 0.432099</result>