It is known that the sum of the lengths of the sides of a cuboid is 9.6 decimeters, and the ratio of length, width and height is 1:3:4. What is the surface area of this cuboid in square decimeters?
已知长方体的棱长之和是9.6分米，长、宽、高的比是1：3：4，这个长方体的表面积是多少平方分米．
<gadget id="calculator">9.6 / 4</gadget>
<output>2.4</output>

<gadget id="calculator">1 + 3 + 4</gadget>
<output>8</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">2.4 * (1/8)</gadget>
<output>0.3</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">2.4 * (3/8)</gadget>
<output>0.9</output>

<gadget id="calculator">0.3 * 0.9</gadget>
<output>0.27</output>

<gadget id="calculator">4 / 8</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2.4 * (1/2)</gadget>
<output>1.2</output>

<gadget id="calculator">0.3 * 1.2</gadget>
<output>0.36</output>

<gadget id="calculator">0.9 * 1.2</gadget>
<output>1.08</output>

<gadget id="calculator">0.27 + 0.36 + 1.08</gadget>
<output>1.71</output>

<gadget id="calculator">1.71 * 2</gadget>
<output>3.42</output>

<result>3.42</result>