Xiaohong walked up the mountain from the bottom of the mountain along the mountain road. After walking for 1 hour, she was still 2 kilometers away from the top of the mountain. From the top of the mountain, she returned the same way and went down to the bottom of the mountain in 50 minutes. It is known that the speed of going down the mountain is 1.5 times that of going up the mountain. How many kilometers is this mountain road?
小红从山下沿山路上山，走了1小时离山顶还差2千米，从山顶按原路返回，50分钟下到山下．已知下山的速度是上山的1.5倍．这条山路长多少千米．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1.5 * (5/6)</gadget>
<output>1.25</output>

<gadget id="calculator">1.25 - 1</gadget>
<output>0.25</output>

<gadget id="calculator">2 / 0.25</gadget>
<output>8</output>

<gadget id="calculator">8 + 2</gadget>
<output>10</output>

<result>10</result>