A cuboid, the height is the width (2/3), the width is the length (3/5), cut it into a largest cube, and the volume of the cube is the same as the original cuboid.
一个长方体，高是宽的(2/3)，宽是长的(3/5)，把它截成一个最大正方体，正方体体积是原来长方体的多少．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">5 * (3/5)</gadget>
<output>3</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3 * (2/3) * 3 * (2/3) * 3 * (2/3)</gadget>
<output>8</output>

<gadget id="calculator">5 * 3 * 3 * (2/3)</gadget>
<output>30</output>

<gadget id="calculator">8 / 30</gadget>
<output>4/15 = around 0.266667</output>

<result>4/15 = around 0.266667</result>