A set of clothes is 200 yuan more expensive than B set of clothes. Later, both sets of clothes are sold at a 15% discount in promotional activities. At this time, how much is A set of clothes more expensive than B set of clothes?
A套衣服比B套衣服标价贵200元，后来促销活动中两套衣服都打八五折销售，此时A套衣服比B套衣服贵多少元．
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

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

<gadget id="calculator">400 - 200</gadget>
<output>200</output>

<gadget id="calculator">200 * (17/20)</gadget>
<output>170</output>

<gadget id="calculator">340 - 170</gadget>
<output>170</output>

<result>170</result>