To build a road, the ratio of the completed part to the total length is 3:8, and the rest is 68 meters longer than the completed part. How long is this road in meters?
修一条路，已经修好了的和总长度的比是3：8，剩下的比已经修好的长68米．这条路全长多少米？
<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(5/8) - (3/8)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">68 / (1/4)</gadget>
<output>272</output>

<result>272</result>