The cross-section of an 8-meter-long cuboid is a square of 3 decimeters. What is the volume of this piece of wood in cubic meters?
一根8米长的长方体木料的横切面是一个变成3分米的正方形，这根木料的体积是多少立方米．
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) * (3/10) * 8</gadget>
<output>18/25 = around 0.72</output>

<result>18/25 = around 0.72</result>