The sum of the sides of a cuboid is 64 cm, and the ratio of length, width, and height is 5:2:1. What is the volume of this cuboid?
一个长方体的棱长总和是64厘米，长、宽、高的比是5：2：1，这个长方体的体积是多少？
<gadget id="calculator">64 / 4</gadget>
<output>16</output>

<gadget id="calculator">5 + 2 + 1</gadget>
<output>8</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">16 * (5/8) * 16 * (1/4) * 16 * (1/8)</gadget>
<output>80</output>

<result>80</result>