The price of a piano is reduced by 20%, which is exactly 1,700 yuan. How much is the original price of this piano?
一架钢琴，降价20%，刚好降价1700元．这架钢琴原价多少元？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1_700 / (1/5)</gadget>
<output>8_500</output>

<result>8_500</result>