There is a cylindrical steel billet with a bottom diameter of 4cm and a height of 6cm. Process it into the largest conical machine part. It is known that the mass of steel per cubic centimeter is 7.85g. What is the mass of this part?
有一个底面直径为4cm，高是6cm的圆柱形钢坯，把它加工成一个最大的圆锥形机器零件，已知每立方厘米钢的质量是7.85g．这个零件的质量是多少？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 6 * 7.85</gadget>
<output>591.576</output>

<result>591.576</result>