A watch is priced at 170 yuan after a 15% discount. What is its original price?
一块手表打八五折后售价是170元，其原价是多少元．
<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>