The length of a cuboid is 1.5 decimeters, the width is 1.2 decimeters, and the height is 1 decimeter. What is the sum of its edge lengths?
一个长方体的长是1.5分米，宽是1.2分米，高是1分米，它的棱长和是多少分米．
<gadget id="calculator">1.2 + 1.5 + 1</gadget>
<output>3.7</output>

<gadget id="calculator">3.7 * 4</gadget>
<output>14.8</output>

<result>14.8</result>