The engineering team repaired a section of road. On the first day, the full length (1/5) was repaired, and on the second day, the full length (1/3) was repaired. How much is the remaining full length?
工程队修一段路，第一天修了全长的(1/5)，第二天修了全长的(1/3)，还剩下全长的多少
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">1 - (1/5) - (1/3)</gadget>
<output>7/15 = around 0.466667</output>

<result>7/15 = around 0.466667</result>