On a road, Xiaohong drives 20 kilometers per hour for 3 hours. At this time, the ratio of the distance traveled and the distance traveled is 2:7. Find the total length of the road.
一条路，小红每小时行驶20千米，行驶了3小时，此时已经行驶的和没行驶的路程比是2：7，求路的全长．
<gadget id="calculator">20 * 3</gadget>
<output>60</output>

<gadget id="calculator">60 / 2</gadget>
<output>30</output>

<gadget id="calculator">2 + 7</gadget>
<output>9</output>

<gadget id="calculator">30 * 9</gadget>
<output>270</output>

<result>270</result>