A square steel billet with a side length of 6dm is re-cast into a rectangular parallelepiped billet with a cross-sectional area of 18dm**2. How long is the cast rectangular billet?
一块棱长6dm的正方体钢坯，重新溶铸成一个横截面积18dm**2的长方体钢坯，铸成的长方体钢坯有多长？
<gadget id="calculator">6 / 18</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 * 6 * (1/3)</gadget>
<output>12</output>

<result>12</result>