The road repair team built a section of 2,400-meter-long road, and repaired the full length (1/6) in the first week, and repaired the full length (1/4) in the second week. How many meters are left unrepaired?
修路队修一段长2400米的公路，第一周修了全长的(1/6)，第二周修了全长的(1/4)．还剩多少米没有修？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/6) + (1/4)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">1 - (5/12)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">2_400 * (7/12)</gadget>
<output>1_400</output>

<result>1_400</result>