When a=what, the reciprocal of (1/(a)) is equal to (1/3).
当a=多少时，(1/(a))的倒数等于(1/3)．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

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