1 meter (2/5) is more or less the same length as 2 meters.
1米的(2/5)和2米的多少一样长．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) / 2</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 * (1/5)</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>