A, B, C, and D build a 1,200-meter-long road. A builds half of the other three teams, B builds one-third of the other three teams, and C builds a quarter of the other three teams. How many meters does D build?
甲乙丙丁修一条1200米长的公路，甲修了其它三队的二分之一，乙修了其它三队的三分之一，丙修了其它三队的四分之一，则丁修了多少米．
<gadget id="calculator">2 + 1</gadget>
<output>3</output>

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

<gadget id="calculator">3 + 1</gadget>
<output>4</output>

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

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/3) - (1/4) - (1/5)</gadget>
<output>13/60 = around 0.216667</output>

<gadget id="calculator">1_200 * (13/60)</gadget>
<output>260</output>

<result>260</result>