A glass of fruit juice, drank (2/6), how much is left in the glass?
一杯果汁，喝了(2/6)，杯中还有几分之几？
<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>