In order to make huge profits, a certain merchant first increased the price of the product by 80%, and then discounted it by 20%. How much money did a color TV with an original price of 3,500 yuan make?
某商户为了牟取暴利，先将商品的价格提高80%，然后再八折酬宾，这种做法，一台原价格3500元的彩电，赚了多少钱？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 + (4/5)</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">3_500 * (9/5) * (4/5)</gadget>
<output>5_040</output>

<gadget id="calculator">5_040 - 3_500</gadget>
<output>1_540</output>

<result>1_540</result>