(2/5) of (12/5) meters is equal to ((())/(())) of 8 meters.
(12/5)米的(2/5)与8米的((())/(()))相等．
<gadget id="calculator">12 / 5</gadget>
<output>12/5 = around 2.4</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) / 8</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(12/5) * (1/20)</gadget>
<output>3/25 = around 0.12</output>

<result>3/25 = around 0.12</result>