"Andersen's Fairy Tales" is now priced at 25 yuan each, which is (1/6) lower than the original price. How much is the current price cheaper than the original price?
《安徒生童话》现在每本售价25元，比原价降低了(1/6)．现价比原价便宜了多少元？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">25 / (5/6)</gadget>
<output>30</output>

<gadget id="calculator">30 - 25</gadget>
<output>5</output>

<result>5</result>