The road repair team repaired a road. On the first day, it repaired the full length (1/6), and on the second day, it repaired the full length (1/2). What fraction of the full length is left to be repaired?
修路队修一条路，第一天修了全长的(1/6)，第二天修了全长的(1/2)，还剩全长的几分之几没修？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

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

<gadget id="calculator">1 - (1/6) - (1/2)</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>