To build a road, the full length (2/15) was repaired on the first day, the full length (2/5) was repaired on the second day, and the full length (1/3) was repaired on the third day. How much is not repaired?
修一条路，第一天修了全长的(2/15)，第二天修了全长的(2/5)，第三天修了全长的(1/3)，还剩下全长的几分之几没有修？
<gadget id="calculator">2 / 15</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (2/15) - (2/5) - (1/3)</gadget>
<output>2/15 = around 0.133333</output>

<result>2/15 = around 0.133333</result>