The sugar content in one ton of sugarcane accounts for about (2/5), (5/4) how many tons of sugar cane contains in this ton.
一吨甘蔗中含糖量约占(2/5)，(5/4)吨这种甘蔗含糖多少吨．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">1 * (2/5) * (5/4)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>