watermelon, my father ate it (2/6), my mother ate it (1/6), my grandpa and grandma ate (1/6), and I ate the rest. How much did I eat?
一个西瓜，爸爸吃了它的(2/6)，妈妈吃了它的(1/6)，爷爷和奶奶吃了(1/6)，剩下的我全吃了．我吃了几分这几？
<gadget id="calculator">2 / 6</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/3) + (1/6) + (1/6)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>