Xiao Ming buys a pair of sneakers with a 15% discount in a store and pays 170 yuan. What is the original price of these shoes?
小明在商店购买一双打8.5折的运动鞋，付款170元，这双鞋原价多少．
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

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

<result>200</result>