For the following formulas (a>0), the one with the largest number is a/how many
下列各式(a＞0)，得数最大的是a/多少
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

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

<result>4/5 = around 0.8</result>