Uncle Li bought a computer at a discounted price of 15% off the original price, which is 300 yuan cheaper than before the discount. How much did Uncle Li pay for this computer?
李叔叔买了一台电脑，价格优惠，是原价的八五折，比打折前便宜了300元，李叔叔买这台电脑花了多少钱？
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">1 - (17/20)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">300 / (3/20)</gadget>
<output>2_000</output>

<gadget id="calculator">2_000 - 300</gadget>
<output>1_700</output>

<result>1_700</result>