An apple, eat its (1/3), what percentage is left uneaten?
一个苹果，吃了它的(1/3)，还剩几分之几没吃？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<result>2/3 = around 0.666667</result>