((())/15)=3/5=((())/40)=(18/(()))=how many (fill in decimals).
((())/15)=3/5=((())/40)=(18/(()))=多少(填小数)．
<gadget id="calculator">9 / 15</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>