Cut a cylinder along the diameter of the bottom surface. The cross-section is a rectangle with a circumference of 56 cm. The ratio of height to diameter of the cylinder is 4:3. What is the volume of this cylinder?
把一个圆柱体沿底面直径切开，横截面是一个周长为56厘米的长方形，圆柱体的高与直径的比是4：3，这个圆柱的体积是多少？
<gadget id="calculator">56 / 2</gadget>
<output>28</output>

<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">28 * (3/7)</gadget>
<output>12</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">28 * (4/7)</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 36 * 16</gadget>
<output>1_808.64</output>

<result>1_808.64</result>