A pile of sand cylinders has a base area of 9 square meters and a height of 2 meters. Use it to pave a road with a width of 5 meters and a thickness of 4 centimeters, how much rice can be paved?
一堆圆柱体沙堆，底面积为9平方米，高2米．用它铺一条宽5米、厚4厘米的路面，能铺多杀米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * 9 * 2</gadget>
<output>6</output>

<gadget id="calculator">5 * 0.04</gadget>
<output>0.2</output>

<gadget id="calculator">6 / 0.2</gadget>
<output>30</output>

<result>30</result>