During the sanitation cleaning, Mingming was in charge of cleaning the glass on a window, but he had already cleaned it (2/6). I would like to ask: How much will he have to wipe to finish all the wipes?
卫生大扫除中，明明负责擦一个窗户上的玻璃，他已经擦了(2/6)．请问：他还要擦几分之几才能全部擦完？
<gadget id="calculator">2 / 6</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>