Master Wang cut a section of cylindrical steel into a conical part with the same bottom and height as the cylindrical steel, and obtained this conical part weighing 23.4 kg. It is known that this steel weighs 7.8 kg per cubic decimeter, and the volume of the cylindrical steel is How many cubic decimeters?
王师傅把一段圆柱形钢材，切削成与圆柱钢材等底等高的圆锥形零件，获得这个圆锥形零件重23.4千克，已知这种钢材每立方分米重7.8千克，圆柱形钢材的体积是多少立方分米？
<gadget id="calculator">3 / 7.8</gadget>
<output>0.384615</output>

<gadget id="calculator">23.4 * 0.384615</gadget>
<output>8.999991</output>

<result>8.999991</result>