A cuboid is 5 decimeters long, 0.4 meters wide, and 30 centimeters high, what is the sum of its sides?
一个长方体，长5分米，宽0.4米，高30厘米，它的棱长之和是多少．
<gadget id="calculator">0.4 * 10</gadget>
<output>4</output>

<gadget id="calculator">30 / 10</gadget>
<output>3</output>

<gadget id="calculator">5 + 4 + 3</gadget>
<output>12</output>

<gadget id="calculator">12 * 0.4 * 10</gadget>
<output>48</output>

<result>48</result>