Divide a 4-meter-long cuboid into 4 sections, and its surface area increases by 1.5 square meters. What is the original volume of the wood in cubic meters?
把一根4米长的长方体木料分成4段，它的表面积增加了1.5平方米，木料原来的体积是多少立方米
<gadget id="calculator">1.5 / 6</gadget>
<output>0.25</output>

<gadget id="calculator">0.25 * 4</gadget>
<output>1</output>

<result>1</result>