Use 336 cm iron wire to make a rectangular frame. The ratio of length, width, and height is known to be 5:4:3. Find the volume of this rectangle.
用336厘米的铁丝制成一个长方形的框架，已知长，宽，高的比是5：4：3，求这个长方形的体积．
<gadget id="calculator">336 / 4</gadget>
<output>84</output>

<gadget id="calculator">5 + 4 + 3</gadget>
<output>12</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">84 * (5/12)</gadget>
<output>35</output>

<gadget id="calculator">4 / 12</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">84 * (1/3)</gadget>
<output>28</output>

<gadget id="calculator">3 / 12</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">84 * (1/4)</gadget>
<output>21</output>

<gadget id="calculator">35 * 28 * 21</gadget>
<output>20_580</output>

<result>20_580</result>