The Beijing Olympic Games will last for 16 days, and it has already been carried out for 3 days. What percentage of the entire schedule has been completed? How much is left unfinished?
北京奥运会要进行16天，已经进行了3天，已经完成全部赛程的几分之几？还剩几分之几没有完成？
<gadget id="calculator">16 - 3</gadget>
<output>13</output>

<gadget id="calculator">13 / 16</gadget>
<output>13/16 = around 0.8125</output>

<result>13/16 = around 0.8125</result>