The food store brings in (3/4) tons of white sugar and (5/6) tons of brown sugar. After selling some sugar, there are still (2/3) tons left. How many tons of sugar are sold in the food store?
食品商店运进白糖(3/4)吨，运进红糖(5/6)吨，卖出一些糖后，还剩下(2/3)吨，食品商店卖出糖多少吨？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(5/6) - (2/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(3/4) + (1/6)</gadget>
<output>11/12 = around 0.916667</output>

<result>11/12 = around 0.916667</result>