A tree is 4 meters high, and its shadow is 6 meters long. At the same time and at the same place, the length of Li Fang's shadow is 1.8 meters. What is Li Fang's actual height in meters? (Solve with ratio)
一棵树有4米高，它的影长6米，在同一时间、同一地点测得李芳的影长是1.8米，李芳的实际身高是多少米？(用比例解)
<gadget id="calculator">4 / 6</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) * 1.8</gadget>
<output>1.2</output>

<result>1.2</result>