cylindrical wood with a length of 35 decimeters is cut into 3 small cylinders, and the surface area is increased by 80 square decimeters. What is the volume of this piece of wood in cubic decimeters?
一个圆柱形木料长35分米，被截成了3段小圆柱，表面积增加了80平方分米．这根木料的体积是多少立方分米．
<gadget id="calculator">80 / 4</gadget>
<output>20</output>

<gadget id="calculator">20 * 35</gadget>
<output>700</output>

<result>700</result>