cuboid is 6 meters long, 5 meters wide, and 4 meters high, what is the sum of its sides?
一个长方体，长6米，宽5米，高4米，它的棱长之和是多少米．
<gadget id="calculator">6 + 5 + 4</gadget>
<output>15</output>

<gadget id="calculator">15 * 4</gadget>
<output>60</output>

<result>60</result>