A cuboid whose length, width, and height are 9 cm, 7 cm, and 3 cm respectively, and a cube iron block whose side length is 5 cm are melted and cast into a cylinder with a base radius of 4 cm. What is the height of the cylinder in cm?
把一个长、宽、高分别是9厘米、7厘米和3厘米的长方体和一块棱长是5厘米的正方体铁块，熔铸成一个底面半径4厘米的圆柱体，圆柱体的高是多少厘米．
<gadget id="calculator">9 * 7 * 3</gadget>
<output>189</output>

<gadget id="calculator">5 * 5 * 5</gadget>
<output>125</output>

<gadget id="calculator">189 + 125</gadget>
<output>314</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">314 / 50.24</gadget>
<output>6.25</output>

<result>6.25</result>