Xiaohua's speed of going down the mountain is 1.5 times of the speed of going up the mountain. He started from the bottom of the mountain to the top of the mountain and then returned along the same road. It took exactly 2 hours to get to the middle of the mountain. How long will it take him to reach the foot of the mountain?
小华下山速度是上山速度的1.5倍，他从山下出发到达山顶后沿原路返回，走到半山腰时正好用了2小时，他到达山脚还需多少时间？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 1.5</gadget>
<output>0.666667</output>

<gadget id="calculator">(1/2) * 0.666667</gadget>
<output>0.333334</output>

<gadget id="calculator">1 + 0.333334</gadget>
<output>1.333334</output>

<gadget id="calculator">2 / 1.333334</gadget>
<output>1.499999</output>

<gadget id="calculator">2 - 1.499999</gadget>
<output>0.500001</output>

<result>0.500001</result>