The base area of a cuboid is a square. If the height increases by 3 cm, it becomes a cube. This means that the area of each side is increased by 18 cm2. What is the volume of the original cuboid in cubic decimeters?
一个长方体的底面积是正方形，如果高增加3cm，就成为一个正方体，这是每个侧面的面积比原来增加了18平方厘米，原来长方体的体积是多少立方分米？
<gadget id="calculator">18 / 3</gadget>
<output>6</output>

<gadget id="calculator">6 - 3</gadget>
<output>3</output>

<gadget id="calculator">3 / 1_000</gadget>
<output>3/1_000 = around 0.003</output>

<gadget id="calculator">6 * 6 * (3/1_000)</gadget>
<output>27/250 = around 0.108</output>

<result>27/250 = around 0.108</result>