If a 3-meter-long cuboid is sawn into 3 sections, the surface area increases by 16 square decimeters. What is the original volume of the cuboid?
把一根3米长的长方体木料，锯成3段后，表面积增加了16平方分米，这根长方体木料原来的体积是多少立方米．
<gadget id="calculator">16 / 4</gadget>
<output>4</output>

<gadget id="calculator">10 / 1_000</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">4 * 3 * (1/100)</gadget>
<output>3/25 = around 0.12</output>

<result>3/25 = around 0.12</result>