A cuboid is 6 cm long, 2 cm wide, and 1.5 cm high, what is the sum of its sides?
一个长方体长6厘米、宽2厘米、高1.5厘米，它的棱长总和是多少．
<gadget id="calculator">6 + 2 + 1.5</gadget>
<output>9.5</output>

<gadget id="calculator">9.5 * 4</gadget>
<output>38</output>

<result>38</result>