A notebook computer was initially sold at a 20% increase in cost price, and later sold at a 15% discount due to market reasons. After the price reduction, each unit will only sell for 5,100 yuan. Is it a loss or a profit to sell a laptop of this kind? How much money was lost or made?
一种笔记本电脑，开始时按成本价提高20%出售，后来因为市场原因打八五折出售．降价后每台只卖5100元．这种笔记本电脑卖出一台是赔了还是赚了？赔了或赚了多少钱？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">(6/5) * (17/20)</gadget>
<output>51/50 = around 1.02</output>

<gadget id="calculator">5_100 / (51/50)</gadget>
<output>5_000</output>

<gadget id="calculator">5_100 - 5_000</gadget>
<output>100</output>

<result>100</result>