After sawing off a cylindrical piece of wood with a length of 5 decimeters, the surface area of the remaining wood is reduced by 94.2 square decimeters. What is the volume of the sawn piece of wood in cubic decimeters?
一根圆柱形木料，锯下5分米长的一段后，剩下的木料的表面积比原来减少了94.2平方分米．锯下的这段木料的体积是多少立方分米？
<gadget id="calculator">94.2 / 5 / 3.14 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9</gadget>
<output>28.26</output>

<gadget id="calculator">28.26 * 5</gadget>
<output>141.3</output>

<result>141.3</result>