The original price of an electronic dictionary is 320 yuan, how much is it after a 15% discount.
一台电子词典原价是320元，打八五折后是多少元．
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">320 * (17/20)</gadget>
<output>272</output>

<result>272</result>