A paving machine paves 162 meters in 3 hours. According to this calculation, how many meters are paved by 2 paving machines in 9 hours.
一台铺路机3小时铺路162米，照这样计算，2台铺路机9小时共铺路多少米．
<gadget id="calculator">162 / 3</gadget>
<output>54</output>

<gadget id="calculator">54 * 2 * 9</gadget>
<output>972</output>

<result>972</result>