small road in the city uses 120 cubic meters of gravel to pave a small road. This road is 150 meters long and 4 meters wide. How thick can it be paved?
市一小用120立方米的沙石铺一条小路，这条路长150米，宽4米，可以铺多厚？
<gadget id="calculator">150 * 4</gadget>
<output>600</output>

<gadget id="calculator">120 / 600</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>