The surface area of a cuboid is 33.42 square decimeters. The length is 2.3 decimeters and the width is 2.1 decimeters. What is its volume in cubic decimeters?
一个长方体的表面积是33.42平方分米．其中长是2.3分米，宽是2.1分米，它的体积是多少立方分米？
<gadget id="calculator">2.3 * 2.1 * 2</gadget>
<output>9.66</output>

<gadget id="calculator">33.42 - 9.66</gadget>
<output>23.76</output>

<gadget id="calculator">2.3 + 2.1</gadget>
<output>4.4</output>

<gadget id="calculator">4.4 * 2</gadget>
<output>8.8</output>

<gadget id="calculator">23.76 / 8.8</gadget>
<output>2.7</output>

<gadget id="calculator">2.3 * 2.1 * 2.7</gadget>
<output>13.041</output>

<result>13.041</result>