Spread 18m3 of coal ash on a runway with a length of 120m and a width of 5m, what is the average thickness of the coal ash in cm?
把18m**3的煤灰平铺在长120m，宽5m的跑道上，煤灰的平均厚度是多少cm．
<gadget id="calculator">120 * 5</gadget>
<output>600</output>

<gadget id="calculator">18 / 600</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">(3/100) * 100</gadget>
<output>3</output>

<result>3</result>