A bag of candy, (4/5) of it was taken away for the first time, and the rest (1/3) was taken away for the second time, what fraction of the bag of candy was taken away in total? How much of this bag of candy is left?
一袋糖果，第一次取走了它的(4/5)，第二次取走了余下的(1/3)，一共取走了这袋糖果的几分之几？还剩这袋糖果的几分之几？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/5) * (1/3)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/15) + (4/5)</gadget>
<output>13/15 = around 0.866667</output>

<gadget id="calculator">1 - (13/15)</gadget>
<output>2/15 = around 0.133333</output>

<result>2/15 = around 0.133333</result>