When the denominator of (8/5) is reduced by 2 times and the numerator is enlarged by how many times, this fraction value is the smallest composite number.
(8/5)的分母缩小2倍，分子扩大多少倍后，这个分数值是最小的合数．
<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">4 * (5/2)</gadget>
<output>10</output>

<gadget id="calculator">10 / 8</gadget>
<output>5/4 = around 1.25</output>

<result>5/4 = around 1.25</result>