To build a road with a length of 1600 meters and a width of 60 meters. The road surface is paved with stones 15 cm thick. How many cubic meters of stones are needed?
修一条公路，长1600米，宽60米，路面铺上15厘米厚的石子，共需石子多少立方米？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1_600 * 60 * (3/20)</gadget>
<output>14_400</output>

<result>14_400</result>