There are 12 apples in a pile, eat one-third of it, how many apples are eaten.
一堆苹果有12个，吃掉它的三分之一，吃掉了多少个苹果．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">12 * (1/3)</gadget>
<output>4</output>

<result>4</result>