A certain furniture city sells a mattress with an original price of 320 yuan at a 15% discount. What is the current price of this mattress?
某家具城将一种原价320元的床垫八五折出售，这种床垫的现价是多少？
<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>