Naughty celebrates her birthday, mother bought a cake, father ate (1/3), mother and naughty each ate (1/4), how much of the cake did the three eat?
淘气过生日，妈妈买了一个蛋糕，爸爸吃了(1/3)，妈妈和淘气各吃了(1/4)，三人共吃了蛋糕的几分之几？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

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

<result>5/6 = around 0.833333</result>