A cylindrical wood with a length of 2 meters is cut into two sections along the direction parallel to the cross section, and the surface area is increased by 156 square centimeters compared with the original one. What is the volume of the original wood in cubic centimeters?
将一根长2米的圆柱形木料沿着与截面平行的方向截成2段，表面积比原来增加了156平方厘米，原来木料的体积是多少立方厘米．
<gadget id="calculator">156 / 2</gadget>
<output>78</output>

<gadget id="calculator">2 * 100</gadget>
<output>200</output>

<gadget id="calculator">78 * 200</gadget>
<output>15_600</output>

<result>15_600</result>