A truck compartment is a cuboid with a length of 6 meters, a width of 1.5 meters, and a height of 3 meters. Fill a cart full of sand, and unload it to form a cone with a height of 2 meters. What is the bottom area of the sand pile in square meters?
一辆货车车厢是一个长方体，它的长是6米，宽是1.5米，高是3米．装满一车沙子，卸下后沙子堆成一个高是2米的圆锥体，这个沙堆的底面积是多少平方米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * 2</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3 / (2/3)</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">6 * 1.5 * (9/2)</gadget>
<output>40.5</output>

<result>40.5</result>