To make a cylindrical cement cylinder with a bottom diameter of 0.8 meters, a wall thickness of 10 centimeters, and a height of 1.5 meters, it is used to drill wells for farmland water conservancy irrigation. Find the volume of this cement cylinder?
要做一个底面直径为0.8米，壁厚10厘米，高1.5米的圆柱形水泥筒，为农田水利灌溉打水井用．求这个水泥筒的体积？
<gadget id="calculator">0.8 / 2</gadget>
<output>0.4</output>

<gadget id="calculator">0.4 ** 2</gadget>
<output>0.16</output>

<gadget id="calculator">0.4 - 0.1</gadget>
<output>0.3</output>

<gadget id="calculator">0.3 ** 2</gadget>
<output>0.09</output>

<gadget id="calculator">0.16 - 0.09</gadget>
<output>0.07</output>

<gadget id="calculator">3.14 * 0.07 * 1.5</gadget>
<output>0.3297</output>

<result>0.3297</result>