A pair of sports shoes originally priced at 400 yuan is now on sale at a 15% discount. What is the current price of this pair of sports shoes?
一双运动鞋原价400元，现在打八五折销售，这双运动鞋现价是多少元．
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">400 * (17/20)</gadget>
<output>340</output>

<result>340</result>