After a log with a length of 2 meters is cut into two pieces, the surface area increases by 24 decimeters**2. What is the original volume of the log?
一根长2米的圆木截成两段后，表面积增加了24分米**2，这根圆木原来的体积是多少？
<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<gadget id="calculator">12 * 20</gadget>
<output>240</output>

<result>240</result>