Xiaoxiao celebrates her birthday. Dad bought a cake. Xiaoxiao ate (1/3). Dad and mother each ate (1/4). How much of this cake is left?
笑笑过生日，爸爸买了一个蛋糕，笑笑吃了(1/3)，爸爸和妈妈各吃了(1/4)，这个蛋糕还剩几分之几？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/3) + (1/4) + (1/4)</gadget>
<output>5/6 = around 0.833333</output>

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

<result>1/6 = around 0.166667</result>