4/5=((())/(()))=(20/(()))=((())/20)=how much (decimal)
4/5=((())/(()))=(20/(()))=((())/20)=多少(小数)
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

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