How many (1/5) of 20 ★ are ★．
20个★的(1/5)是多少个★．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">20 * (1/5)</gadget>
<output>4</output>

<result>4</result>