A commodity whose cost is now reduced (1/12) from its original cost, what is its original cost now?
一种商品，现在成本比原来降低(1/12)，现在成本是原来的多少．
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 - (1/12)</gadget>
<output>11/12 = around 0.916667</output>

<result>11/12 = around 0.916667</result>