A certain village is building a section of road. The first half of the total length is repaired, the second repair is 200 meters, the third repair is the remaining half, and there are 170 meters left to be repaired. How many meters is the total length of this road?
某村在修一段路，第一次修全长的一半，第二次修200米，第三次修剩下的一半，还剩170米没修好，问这条路全长多少米．
<gadget id="calculator">200 + 170 + 170</gadget>
<output>540</output>

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

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

<gadget id="calculator">540 / (1/2)</gadget>
<output>1_080</output>

<result>1_080</result>