cylindrical wooden stick with a length of 5 meters is cut into three sections, and the surface area is increased by 60 square decimeters. What is the volume of this cylindrical wooden stick?
一根长5米的圆柱形木棒，把它截成三段，表面积增加了60平方分米，这根圆柱形木木棒的体积是多少？
<gadget id="calculator">15 * 50</gadget>
<output>750</output>

<gadget id="calculator">750 / 10</gadget>
<output>75</output>

<result>75</result>