A plan of the test field was drawn with a scale of 1:8000. It is known that its length is 6 cm and its width is 4 cm. What is its actual area in hectares?
用1：8000的比例尺画出了一块试验田的平面图．已知它的图上长是6厘米，宽是4厘米．它的实际面积是多少公顷？
<gadget id="calculator">1 / 8_000</gadget>
<output>1/8_000 = around 0.000125</output>

<gadget id="calculator">6 / (1/8_000) / 100</gadget>
<output>480</output>

<gadget id="calculator">4 / (1/8_000) / 100</gadget>
<output>320</output>

<gadget id="calculator">480 * 320</gadget>
<output>153_600</output>

<result>153_600</result>