A cuboid iron block whose length, width, and height are 9 cm, 7 cm, and 3 cm respectively and a cube iron block whose edge length is 5 cm are melted and cast into a cylinder. The diameter of the bottom surface of this cylinder is 20 cm, and the height is How many centimeters is it?
把一个长、宽、高分别为9厘米、7厘米、3厘米的长方体铁块和一个棱长是5厘米的正方体铁块，熔铸成一个圆柱体，这个圆柱体的底面直径是20厘米，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">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100</gadget>
<output>314</output>

<gadget id="calculator">314 / 314</gadget>
<output>1</output>

<result>1</result>