Two cylinders with equal bases, one with a height of 5 decimeters and a volume of 90 cubic decimeters. The other is 3 decimeters high, what is its volume in cubic decimeters?
两个底面积相等的圆柱，一个高为5分米，体积为90立方分米．另一个高为3分米，它的体积是多少立方分米？
<gadget id="calculator">90 / 5</gadget>
<output>18</output>

<gadget id="calculator">18 * 3</gadget>
<output>54</output>

<result>54</result>