The original price of a bicycle is 500 yuan. What is the price of this bicycle after a 15% discount?
一辆自行车原价500元，这辆自行车打八五折后的价钱是多少元．
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">500 * (17/20)</gadget>
<output>425</output>

<result>425</result>